The Google Analytics module for Drupal does exactly what you would expect... it lets you add the Analytics code to your site without having to get dirty in any code!

In addition to standard Google Analytics tracking this module lets you track users by profile fields & file downloads which can be really powerful.

 

The steps to get Google Analytics working are simple:

Global Redirect is a simple but incredibly useful module for SEO that makes sure users are going to the correct alias of a node since nodes can be aliased in multiple ways (clean url, unclean url, node/###) and duplicate content is a no-no in the SEO world. From the module page:

1. Checks the current URL for an alias and does a 301 redirect to it if it is not being used.
2. Checks the current URL for a trailing slash, removes it if present and repeats check 1 with the new request.

SEO Checklist is a must have Drupal Module for all Drupal sites. It creates a checklist with handy links to the modules/settings that help make your Drupal installation as SEO friendly as possible.
Now I know what you might be saying... "I'm a Drupal expert, I don't need a module to tell me what modules I should be running." Well, I don't believe you. Even the most grizzled developer can forget to add a module or *gasp* not know every Drupal module in existence.