From http://wiki.vtiger.com/archives

This documentation applies to vtigerCRM 5.2.1

1. CRM Basics

CRM Functions

Common CRM Terms & Concepts

2. vtigerCRM Product Overview

Sales Force Automation

Marketing Management Features

Customer Service/Support Feature

Inventory Management Features

3. Getting Started with vtigerCRM

Before You Begin

Logging Into vtigerCRM

Changing Password

Changing Date Format

User Interface Overview

Accessing Different Modules

Preferences

CRM Home Page

Home Page Content

4. Sales Force Automation

Sales Process

Managing Leads

Navigating Leads

Searching Leads

Create Leads

Importing Leads

Associating Leads with Other Records

Sending Emails to Leads

Creating Mail Merge Documents

Exporting Leads

Converting Leads

Deleting Leads

Managing Accounts

Navigating Accounts

Searching Accounts

Creating Accounts

Importing Accounts

Associating Accounts

Creating Mail Merge Documents

Exporting Accounts

Deleting Accounts

Account Hierarchy

Managing Contacts

Navigating Contacts

Searching Contacts

Creating Contacts

Importing Contacts

Associating Contacts

Creating Mail Merge Documents

Sending Emails to Contacts

Exporting Contacts

Deleting Contacts

Managing Potentials

Sales Pipeline Chart

Navigating Potentials

Searching Potentials

Creating Potentials

Importing Potentials

Associating Potentials

Exporting Potentials

Deleting Potentials

Managing Quotes

Converting Quotes

Managing Invoices

Recurring Invoice

Managing Sales Orders

5. Marketing Automation

Managing Campaigns

Navigating Campaigns

Searching Campaigns

Creating Campaigns

Associating Campaigns

Changing Campign Owner

Delete Campaigns

More Information

Email Marketing

Email Templates

Custom Fields In Email Templates

Email Tracking

Marketing Leads Management

Price Books

6. Customer Service / Support Management

Services

Service Contracts

Managing Customer Tickets

Knowledge Base

7. Inventory Management

Products

Product Bundles

Product Re-Ordering

Purchase Orders

Vendors

Assets

8. Reports & Dashboards

9. Calendar

To Do

Events

Meetings

Deleting Activities

Notifications

Custom Events In Calendar

Custom Fields In Calendar

User Filters In Calendar

Popup Reminder

10. Webmail

11. Documents

12. Other vtiger CRM Features

Export & Import of Data

Asterisk Integration

Gmail Bookmarklet

Recycle Bin

Project Management

SMS Notifier

Custom Filter

Detail View Navigation

Duplicate Merging

Mass Edit

Role Based Custom filters

13. PBX Manager(Asterisk)

14. Administration Tools

Access Control

Layout Editor

Blocks

Fields

Picklist Editor

Tooltip Management

Module Manager

Outgoing Server

Backup Server

Workflow

Configuring Cron Job

Mail Converter

Field Formulas

Multi Currency

Module Sequence Numbering

Disable Email Notifications