I know this is old but I'll give you my two cents. For studying for 1 and 2 I bought the Shake and Bakes and both parts of LarePrep. For Section 1 I also read Construction Contracts. Those are the only sources I used.
I bought Shake and Bake and took it every other night (it takes about 30-40 minutes to take it then grade it) until I passed every question (I took it forwards and backwards to mix it up). Once I perfected Shake and Bake I bought the first LarePrep and took it until I perfected it, then bought part 2.
Honestly I am not sure how many questions were directly relevant but I learned enough to know what the questions on the Exam were asking and I knew what was NOT the right answer. To be unclear, if you know what the answer to a question isn't, you're halfway there.