Elaborate how to get needed LFS files

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@11890 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter03/introduction.xml

@@ -49,9 +49,28 @@
 
 <screen role="nodump"><userinput>chmod -v a+wt $LFS/sources</userinput></screen>
 
-  <para>An easy way to download all of the packages and patches is by using
-  <ulink url="../wget-list">wget-list</ulink> as an input to
-  <command>wget</command>. For example:</para>
+  <para>There are several ways to optain all the necessary packages and patches
+  to build LFS:</para>
+
+  <itemizedlist>
+    <listitem>
+      <para>The files can be downloaded individually as described in the 
+      next two sections.</para>
+    </listitem>
+    <listitem>
+      <para>For stable versions of the book, a tarball of all the needed files 
+      can be downloaded from one of the LFS files mirrors listed at
+      <ulink url="http://www.linuxfromscratch.org/mirrors.html#files"/>.</para>
+    </listitem>
+    <listitem>
+      <para>The files can be downloaded using <command>wget</command> and
+      a wget-list as described below.</para>
+    </listitem>
+  </itemizedlist>
+
+  <para>To download all of the packages and patches by using
+  <ulink url="../wget-list">wget-list</ulink> as an input to the
+  <command>wget</command> caoomad, use:</para>
 
 <screen role="nodump"><userinput>wget --input-file=wget-list --continue --directory-prefix=$LFS/sources</userinput></screen>
 
@@ -61,7 +80,10 @@
   <filename class="directory">$LFS/sources</filename> and run:</para>
 
 <screen role="nodump"><userinput>pushd $LFS/sources
-md5sum -c md5sums
+  md5sum -c md5sums
 popd</userinput></screen>
 
+  <para>This check can be used after retrieving the needed files with any of the 
+  methods listed above.</para>
+
 </sect1>