I found AGK to be a complete nightmare! No matter how much you learn there will be something in there that foxes you. Bristol has some good notes for it, OATS are good too.
About 20 electrics and 20 pistons questions came up in mine. Used to get about 8 electrics if you were lucky but apparantly at least one instructor from a certain FTO piped up to JAR and requested more. Good of him hey!
Have got some AGK feedback and will dig it out for you soon.
VFE.