diff --git a/doc/tutorial/Makefile b/doc/tutorial/Makefile
new file mode 100644
index 000000000..9fe17f20a
--- /dev/null
+++ b/doc/tutorial/Makefile
@@ -0,0 +1,21 @@
+TEXI2HTML = texi2html
+TEXI2PDF = texi2dvi --pdf
+EPSTOPDF = epstopdf
+TGIF = tgif 
+CSS = --css-include=tutorial.css
+
+TGIF_SOURCES = helpers.obj
+TGIF_EPS = ${TGIF_SOURCES:.obj=.eps}
+
+all:  images tutorial.html tutorial.pdf
+
+images:
+	cd figures/; $(TGIF) -print -png $(TGIF_SOURCES) 
+	cd figures/; $(TGIF) -print -eps $(TGIF_SOURCES) 
+	cd figures/; $(EPSTOPDF) $(TGIF_EPS)
+
+tutorial.html:
+	$(TEXI2HTML) ${CSS} tutorial.texi
+
+tutorial.pdf:
+	$(TEXI2PDF) tutorial.texi
diff --git a/doc/tutorial/figures/README b/doc/tutorial/figures/README
new file mode 100644
index 000000000..fe69d95cb
--- /dev/null
+++ b/doc/tutorial/figures/README
@@ -0,0 +1,9 @@
+Please write image files in a vector graphics format, when possible, and
+generate the .png and .pdf versions on the fly (see ../Makefile).  
+
+Recommended tools are dia, tgif, and xfig.  Store the .dia, .obj, or .fig 
+versions in mercurial, but not the .png or .pdfs.
+
+Note:  tgif can convert from .obj to .pdf, but the pdf that results takes
+up a whole page.  Instead, we convert to an intermediate .eps step, and
+then run epstopdf.
diff --git a/doc/tutorial/figures/helpers.obj b/doc/tutorial/figures/helpers.obj
new file mode 100644
index 000000000..22362079f
--- /dev/null
+++ b/doc/tutorial/figures/helpers.obj
@@ -0,0 +1,115 @@
+%TGIF 4.1.43-QPL
+state(0,37,100.000,0,0,0,32,1,9,1,1,0,0,1,2,1,0,'Courier',0,80640,0,2,0,10,0,0,1,1,0,16,0,0,1,1,1,1,1088,1408,1,0,2880,0).
+%
+% @(#)$Header$
+% %W%
+%
+unit("1 pixel/pixel").
+color_info(11,65535,0,[
+	"magenta", 65535, 0, 65535, 65535, 0, 65535, 1,
+	"red", 65535, 0, 0, 65535, 0, 0, 1,
+	"green", 0, 65535, 0, 0, 65535, 0, 1,
+	"blue", 0, 0, 65535, 0, 0, 65535, 1,
+	"yellow", 65535, 65535, 0, 65535, 65535, 0, 1,
+	"pink", 65535, 49344, 52171, 65535, 49344, 52171, 1,
+	"cyan", 0, 65535, 65535, 0, 65535, 65535, 1,
+	"CadetBlue", 24415, 40606, 41120, 24415, 40606, 41120, 1,
+	"white", 65535, 65535, 65535, 65535, 65535, 65535, 1,
+	"black", 0, 0, 0, 0, 0, 0, 1,
+	"DarkSlateGray", 12079, 20303, 20303, 12079, 20303, 20303, 1
+]).
+script_frac("0.6").
+fg_bg_colors('black','white').
+dont_reencode("FFDingbests:ZapfDingbats").
+page(1,"",1,'').
+text('black',272,195,2,0,1,248,36,0,13,5,0,0,0,0,2,248,36,0,0,"",0,0,0,0,208,'',[
+minilines(248,36,0,0,0,0,0,[
+mini_line(200,13,5,0,0,0,[
+str_block(0,200,13,5,0,-8,0,0,0,[
+str_seg('black','Courier',0,80640,200,13,5,0,-8,0,0,0,0,0,
+	"low-level APIs (all src/ ")])
+]),
+mini_line(248,13,5,0,0,0,[
+str_block(0,248,13,5,0,-2,0,0,0,[
+str_seg('black','Courier',0,80640,248,13,5,0,-2,0,0,0,0,0,
+	"directories except src/helper/)")])
+])
+])]).
+rcbox('black','',96,240,384,288,5,1,1,0,16,2,0,0,0,0,'1',0,[
+]).
+text('black',192,259,1,0,1,112,18,3,13,5,2,0,0,0,2,112,18,0,0,"",0,0,0,0,272,'',[
+minilines(112,18,0,0,0,0,0,[
+mini_line(112,13,5,0,0,0,[
+str_block(0,112,13,5,0,0,0,0,0,[
+str_seg('black','Courier',0,80640,112,13,5,0,0,0,0,0,0,0,
+	"ns-3 simulator")])
+])
+])]).
+poly('black','',2,[
+	272,208,240,240],0,1,1,17,0,0,2,0,0,0,0,'1',0,0,
+    "0","",[
+    0,8,3,0,'8','3','0'],[0,8,3,0,'8','3','0'],[
+]).
+poly('black','',2,[
+	240,176,240,240],1,1,1,18,0,0,0,0,0,0,0,'1',0,0,
+    "0","",[
+    0,8,3,0,'8','3','0'],[0,8,3,0,'8','3','0'],[
+]).
+rcbox('black','',176,128,384,176,5,1,1,0,16,25,0,0,0,0,'1',0,[
+]).
+text('black',192,131,2,0,1,120,36,26,13,5,2,0,0,0,2,120,36,0,0,"",0,0,0,0,144,'',[
+minilines(120,36,0,0,0,0,0,[
+mini_line(120,13,5,0,0,0,[
+str_block(0,120,13,5,0,-1,0,0,0,[
+str_seg('black','Courier',0,80640,120,13,5,0,-1,0,0,0,0,0,
+	"ns-3 helper API")])
+]),
+mini_line(96,13,5,0,0,0,[
+str_block(0,96,13,5,0,-2,0,0,0,[
+str_seg('black','Courier',0,80640,96,13,5,0,-2,0,0,0,0,0,
+	"(src/helper)")])
+])
+])]).
+rcbox('black','',96,16,384,64,0,1,1,0,16,32,0,0,0,0,'1',0,[
+]).
+poly('black','',2,[
+	240,64,240,128],1,1,1,36,0,0,0,0,0,0,0,'1',0,0,
+    "0","",[
+    0,8,3,0,'8','3','0'],[0,8,3,0,'8','3','0'],[
+]).
+text('black',272,83,2,0,1,200,36,40,13,5,0,0,0,0,2,200,36,0,0,"",0,0,0,0,96,'',[
+minilines(200,36,0,0,0,0,0,[
+mini_line(200,13,5,0,0,0,[
+str_block(0,200,13,5,0,-2,0,0,0,[
+str_seg('black','Courier',0,80640,200,13,5,0,-2,0,0,0,0,0,
+	"helper APIs (src/helper/)")])
+]),
+mini_line(192,13,5,0,0,0,[
+str_block(0,192,13,5,0,-1,0,0,0,[
+str_seg('black','Courier',0,80640,192,13,5,0,-1,0,0,0,0,0,
+	"call into low-level APIs")])
+])
+])]).
+poly('black','',2,[
+	272,96,240,128],0,1,1,41,0,0,2,0,0,0,0,'1',0,0,
+    "0","",[
+    0,8,3,0,'8','3','0'],[0,8,3,0,'8','3','0'],[
+]).
+text('black',128,19,2,0,1,232,36,47,13,5,0,0,0,0,2,232,36,0,0,"",0,0,0,0,32,'',[
+minilines(232,36,0,0,0,0,0,[
+mini_line(224,13,5,0,0,0,[
+str_block(0,224,13,5,0,-2,0,0,0,[
+str_seg('black','Courier',0,80640,224,13,5,0,-2,0,0,0,0,0,
+	"ns-3 scripts (main programs)")])
+]),
+mini_line(232,13,5,0,0,0,[
+str_block(0,232,13,5,0,-1,0,0,0,[
+str_seg('black','Courier',0,80640,232,13,5,0,-1,0,0,0,0,0,
+	"- may use either or both APIs")])
+])
+])]).
+poly('black','',2,[
+	144,64,144,240],1,1,1,50,0,0,0,0,0,0,0,'1',0,0,
+    "0","",[
+    0,8,3,0,'8','3','0'],[0,8,3,0,'8','3','0'],[
+]).
diff --git a/doc/tutorial/helpers.texi b/doc/tutorial/helpers.texi
new file mode 100644
index 000000000..b64858173
--- /dev/null
+++ b/doc/tutorial/helpers.texi
@@ -0,0 +1,20 @@
+@node Helper Functions
+@chapter Helper Functions
+@anchor{chap:Helpers}
+This chapter describes an intermediate API for the simulator; what we
+call the "helper API".  The helper API is implemented in 
+@code{src/helper/} directory; it depends on (and wraps) the low-level
+API which is implemented everywhere else in @code{src/}.  The following
+figure shows this relationship.
+@center @image{figures/helpers,,,,png}
+
+The use of the helper API is optional.  It has two main goals:
+@itemize @bullet
+@item Provide "syntactic sugar" to wrap a number of related low-level
+API calls together, that would normally be grouped together often, into 
+something that is more user-friendly.
+@item Handle configuration of larger topological units (e.g., a set 
+of nodes or a set of nodes on a particular link) . 
+@end itemize
+
+(more to follow)
diff --git a/doc/tutorial/output.texi b/doc/tutorial/output.texi
index aa836b5cd..185608b42 100644
--- a/doc/tutorial/output.texi
+++ b/doc/tutorial/output.texi
@@ -457,9 +457,6 @@ wrapper, so you will not see the ARP exchanges that were logged when using
 the ASCII trace wrapper.  You are encouraged to take a look at the contents
 of these pcap files using your favorite pcap software (or Wireshark).
 
-@node Statistics
-@section Statistics
-
 @node Advanced Tracing 
 @section Advanced Tracing 
 
diff --git a/doc/tutorial/statistics.texi b/doc/tutorial/statistics.texi
new file mode 100644
index 000000000..094e91a4b
--- /dev/null
+++ b/doc/tutorial/statistics.texi
@@ -0,0 +1,9 @@
+@node Statistics
+@chapter Statistics
+@anchor{chap:Statistics}
+
+ns-3 does not presently have support for statistics (automatically generated
+statistical output).  This is planned
+for development later in 2008.  If you are interested in contributing,
+please see @uref{http://www.nsnam.org/wiki/index.php/Suggested_Projects,,our suggested projects page} or contact the ns-developers
+list.
diff --git a/doc/tutorial/tutorial.css b/doc/tutorial/tutorial.css
new file mode 100644
index 000000000..a7586ac83
--- /dev/null
+++ b/doc/tutorial/tutorial.css
@@ -0,0 +1,156 @@
+body {
+   font-family: "Trebuchet MS", "Bitstream Vera Sans", verdana, lucida, arial, helvetica, sans-serif;
+   background: white;
+   color: black;
+   font-size: 11pt;
+}
+
+h1, h2, h3, h4, h5, h6 {
+#   color: #990000;
+   color: #009999;
+}
+
+pre {
+   font-size: 10pt;
+   background: #e0e0e0;
+   color: black;
+}
+
+a:link, a:visited {
+   font-weight: normal;
+   text-decoration: none;
+   color: #0047b9;
+}
+
+a:hover {
+   font-weight: normal;
+   text-decoration: underline;
+   color: #0047b9;
+}
+
+img {
+    border: 0px;
+}
+
+#main th {
+   font-size: 12pt;
+   background: #b0b0b0;
+}
+
+.odd {
+   font-size: 12pt;
+   background: white;
+}
+
+.even {
+   font-size: 12pt;
+   background: #e0e0e0;
+}
+
+.answer {
+   font-size: large;
+   font-weight: bold;
+}
+
+.answer p {
+   font-size: 12pt;
+   font-weight: normal;
+}
+
+.answer ul {
+   font-size: 12pt;
+   font-weight: normal;
+}
+
+#container {
+  position: absolute;
+  width: 100%;
+  height: 100%;
+  top: 0px;
+}
+
+#feedback {
+  color: #b0b0b0;
+  font-size: 9pt;
+  font-style: italic;
+}
+
+#header {
+   position: absolute;
+   margin: 0px;
+   top: 10px;
+   height:96px;
+   left: 175px;
+   right: 10em;
+   bottom: auto;
+   background: white;
+   clear: both;
+}
+
+#middle {
+   position: absolute;
+   left: 0;
+   height: auto;
+   width: 100%;
+}
+
+#main {
+   position: absolute;
+   top: 50px;
+   left: 175px;
+   right: 100px;
+   background: white;
+   padding: 0em 0em 0em 0em;
+}
+
+#navbar {
+   position: absolute;
+   top: 75px;
+   left: 0em;
+   width: 146px;
+   padding: 0px;
+   margin: 0px;
+   font-size: 10pt;
+}
+
+#navbar a:link, #navbar a:visited {
+   font-weight: normal;
+   text-decoration: none;
+   color: #0047b9;
+}
+
+#navbar a:hover {
+   font-weight: normal;
+   text-decoration: underline;
+   color: #0047b9;
+}
+
+#navbar dl {
+   width: 146px;
+   padding: 0;
+   margin: 0 0 10px 0px;
+   background: #99ffff url(images/box_bottom2.gif) no-repeat bottom left;
+}
+
+#navbar dt {
+   padding: 6px 10px;
+   font-size: 100%;
+   font-weight: bold;
+   background: #009999;
+   margin: 0px;
+   border-bottom: 1px solid #fff;
+   color: white;
+   background: #009999 url(images/box_top2.gif) no-repeat top left;
+}
+
+#navbar dd {
+   font-size: 100%;
+   margin: 0 0 0 0px;
+   padding: 6px 10px;
+   color: #0047b9;
+}
+
+dd#selected {
+   background: #99ffff url(images/arrow.gif) no-repeat;
+   background-position: 4px 10px;
+}
diff --git a/doc/tutorial/tutorial.texi b/doc/tutorial/tutorial.texi
index d71fe8cf3..737041b61 100644
--- a/doc/tutorial/tutorial.texi
+++ b/doc/tutorial/tutorial.texi
@@ -109,10 +109,12 @@ Part 5:  Extending ns-3
 @include introduction.texi
 @include log.texi
 @include attributes.texi
+@include statistics.texi
+@include helpers.texi
 @include callbacks.texi
 @include output.texi
 @include routing.texi
-@include other.texi
+@c @include other.texi
 @include troubleshoot.texi
 
 @printindex cp