I’m a big fan of comprehensive guides. People and companies put a lot of time and effort into compiling the information and in the end, they’re often a great one-stop shop to refer back on for your own efforts or to help guide clients.
Poke around, give ’em a gander, absorb and apply.
Best Practice Guide for Marketing on Facebook
Created by Facebook, this guide provides guiding principles and solid tactical advice to help develop a framework for your Facebook marketing efforts.
The Ultimate Guide to Twitter Marketing
There are of course other similar Twitter Guide resources that have been created (Mashable’s and Twitter’s own guides being two of the more popular) I simply found the categorical breakdown used on this particular guide to be very intuitive and helpful.