Guide

Information : Theming Views 2 – The Basics

Views 2 provides a well structured theming environment allowing presentation control for each element of your view. And in my humble opinion, it rocks!

Those with no past experience with Views 1 will find Views 2 uses standard PHPTemplate theming techniques. All of your experience theming Drupal can be used with Views.

Tips : SEO for Drupal (Basic SEO For Drupal)

Tips : An Introduction to Drupal & MySQL Performance Tuning Part I

Tips : Improving Drupal Performance Part III

Slideshow : Drupal Recipes: Building Image Galleries with jQuery and Flickr

Installation : Installing and Configuring Drupal 6.1

Tips : Open Source Content Management Part 4 | Generating a bespoke RSS feed

By default Drupal automatically creates a feed for the whole website.

Tips : Create a new Payment Gateway

e-Commerce can be integrated with several payment gateways around the globe. Its just matter of doing so.

Creating a payment gateway means creating a new module. Your module should be named appropriately so that others will recognize it and desire to use it as well. For the purposes of this tutorial, we shall call ours *mygateway*.

e-Commerce Version 4

Info : Drupal White papers , Cheatsheets and Free books

If you have started with drupal and want to expand your knowledge, you either need to sit and spend time on Drupal Handbooks or buy some Drupal books.
Here I am giving some good collection of PDFs available on the web, which can be used for beginner or intermidiate developers.

Tips : 4 Things to Know Before Installing Drupal 6

[1] Make sure that you update your MySQL database to version 5