The most popular study guide for the General morning portion is the "FE Review Manual" from ppi2pass.com. PPI is probably the biggest publisher of FE and PE review materials.
The PPI manual includes a morning sample exam. However, if you want the most realistic preview of the actual exams (in terms of both format and difficulty), then you should get a sample exam from ncees.org (the publisher of the actual exams)
The NCEES website also offers the "FE Reference Handbook"; you can order a hard copy or download it for free. You should get familiar with the Handbook, because it is the only reference that you are allowed to consult during the FE exam. However, the Handbook is not a study guide; it's just a compilation of formulas, graphs, and other information that may be needed to solve FE problems.
When I took the FE exam (several years ago), I chose the "General" module for the afternoon; the FE Review Manual from PPI worked well for both the morning and afternoon sections. However, you would probably want additional materials if you take a discipline-specific module in the afternoon. I'm sure you can get those from PPI as well.
Also make sure you have a calculator that meets NCEES exam requirements. Do all your exam practice with that calculator so you are thoroughly familiar with it.
Last edited by Corbett; 07-04-2011 at 03:17 PM.