diff --git a/Manuals/Tcpi-ug/Preface.docbook b/Manuals/Tcpi-ug/Preface.docbook
index 002f9fb..f49e2a8 100755
--- a/Manuals/Tcpi-ug/Preface.docbook
+++ b/Manuals/Tcpi-ug/Preface.docbook
@@ -7,8 +7,10 @@
     </para>
 
     <para>
-        This book describes you can use the telephone network to
-        create a collaborative network using computers.
+        This book describes how you can configure &TCD; to use the
+        telephone network as physical medium for data transmission
+        using computers, so you can create your own collaborative
+        networks to share information with your friends in freedom.
     </para>
 
     <para>
@@ -22,9 +24,10 @@
         you have one LAN for each province in your country and then,
         each of these LANs is connected one another to share
         information between them using the country's telephone
-        network.  This infrastructure would be as expensive as a
-        national telephone call would be (without counting the consume
-        of electrical power required by computers, of course).
+        network.  This infrastructure would be as expensive as
+        telephone calls would be (without counting the consume of
+        electrical power required by computers and communication
+        devices, of course).
     </para>
 
     <para>
@@ -47,14 +50,15 @@
         <xref linkend="services" /> describes how to configure server
         and client computers to exchange information using internet
         services over the telephone network. Once you complete this
-        step, your collaborative network should be ready for
-        production.
+        part of the book, your collaborative network should be ready
+        for production.
     </para>
     </listitem>
     <listitem>
     <para>
         <xref linkend="licenses" /> describes the lincense documents
-        mentioned in this book.
+        mentioned in this book so you can know what you can and cannot
+        do with the information provided in this book.
     </para>
     </listitem>
     </itemizedlist>