Compare the Comma Method:

Compare the Comma Guides to the top certification courseware. (Click here to download the pdf)

The Comma guides are great for walking newbies through the material. Newbies means those who are new to the features, even if they've been using the program for a while. 

One of the best guides out there:

“Working with the Comma books spoiled me. Your books have all these pictures. They explain the technical stuff without being too advanced OR condescending. They have step by step instructions along with the many screen shots... 

You win.”