You need to buy all the manuals. On the test it could be any question asked from any of the manuals. Steel, ACI, ASCE, NDS are a must. Remaining are a bonus. Yes, on demand there is an immediate access to the lectures.
Same here.. took this course recommended by my colleague, and passed with AEI on my first try! It was a lot of work and I would dedicate at least 1.5 months for depth only. But the payoff is huge! Good luck everyone.
I also took AEI and passed April 2021 on my first try. The depth was really well taught. The knowledge I received from Dr. Ibrahim is with me forever. Now I am using their binders in my day to day work.