I really got a lot out of the Gleim Co. computerized at home study system. You do it at your own pace, and I remembered a lot of the material by going over it more thoroughly. You review an outline of important stuff, and then use the PC based program to practice. After a while you can get real good at it. A number of my students used the same system and really liked it.
I used it for my commercial, instrument, and ATP. It was not available back then for the FE written, so I used the King product - which I did not like nearly as well.
I had a lot of ATP students that had taken the all ATP quickie test prep, and most of them couldn't recall a lot of the material that was needed for the oral.
Try
www.gleim.com