[Porsche-O-Phile]

Gleim is great as a test prep, IMHO. I would also HIGHLY recommend the Jeppesen hardcover book (it's expensive, but worth it). A lot of my initial Private Pilot students opted for the Cessna program.

There are so many different programs available right now (King, Ron Machado, etc.) it's not even worth getting into them all. They all present the same content, just IMHO the Jeppesen book does so in a very straightforward manner and it's a useful "brush-up" reference.

Best advice is go poke around your local pilot shop and see what jumps out at you but I've never had anyone fail the written or oral using the Jepp/Gleim combination for either a Private, Instrument or Commercial (and I've done several of each).

Best of luck!