add sections, expand, reorg

doc/install.mdwn

@@ -2,21 +2,28 @@ The easiest way to install ikiwiki is using the Debian package, but you can
 also [[download]] the source and install it by hand. Ikiwiki should work on
 most unix-like systems.
 
+## prerequites
+
 Ikiwiki is a perl program, and needs a recent version of perl such as
 5.10. (5.8.0 has been reported not to work).
 
+It's recommended you have a C compiler, as ikiwiki uses one to build
+wrappers.
+
 Ikiwiki requires the [[cpan Text::Markdown]], [[cpan URI]],
 [[cpan HTML::Parser]], [[cpan HTML::Template]], and [[cpan HTML::Scrubber]]
 perl modules be installed. It can also use a lot of other perl modules, if
 they are available.
 
-It's recommended you have a C compiler, as ikiwiki uses one to build
-wrappers.
-
-Various [[plugins]] use other libraries and utlities; see their individual
+Various [[plugins]] use other perl modules and utilities; see their individual
 documentation for details.
 
-The Debian packages depend on and recommend an appropriate set of packages.
+## Debian
+
+The Debian packages depend on and recommend an appropriate set of packages,
+so just install ikiwiki using apt.
+
+## Fedora 7
 
 While Fedora 7 doesn't have an ikiwiki package, you can install needed
 perl modules using this command:
@@ -25,6 +32,8 @@ perl modules using this command:
 	  perl-XML-Simple perl-TimeDate perl-HTML-Template perl-CGI-FormBuilder \
 	  perl-CGI-Session perl-File-MimeInfo perl-gettext
 
+## Installing by hand
+
 If you want to install by hand from the tarball, you should make sure that
 all the perl modules are installed. This is one way to install them, using
 CPAN:
@@ -39,4 +48,9 @@ Then to build and install ikiwiki:
 	make test # optional
 	make install
 
-See [[download]] for where to get it.
+If you're using a shared hosting provider, of the sort where you don't have
+root, you can still install ikiwiki. There are tutorials covering this for
+a few providers:
+
+* [[tips/NearlyFreeSpeech]]
+* [[tips/DreamHost]]