Learn all of your signs (round ones, triangular ones, lane markings) in the Highway Code
Learn the MUST not and SHOULD not rules through out the Highway Code
Pay attention to the extra care needed for pedestrians (giving way at junctions) and cyclists (extra room)
Try the Safer Driving for life 7 day app with all the multiple highway code questions, video clips and questions and hazard perception clips. It covers everything and I think its about £15 - not the cheapest but a thorough set of learning questions (there are others but the fact is you need to devote yourself to learning and quickly)
Immerse yourself totally on a 3 day binge fest of driving rules etc etc - nothing else at all!! Eat sleep, Highway Code; Eat sleep, Highway Code etc - And you might be in with a chance.
Good luck
Remember for the MCQ's - There are usually 2 answers you can discard, and there are usually 2 answers left that are very similar so read the question carefully. Never change an answer at the end to a different one unless you are very very sure it is wrong, or you have misread the question to start with.