Besides the explanation videos, which videos can I watch in the core curriculum to get help on SeqDbl games?

Anyone have tips on how to do Blind Review using LawHub? 7sage interface seems to have a good framework for BR, but I feel like it's also important for me to keep practicing with the official interface, even if the right answer is there. Would I just write down on some paper what I was unsure of and make a new test to BR from there?

Also, general question: I took about 20 PTs and the June 2021 LSAT before I started using 7sage and BR. Is it even worth the time to try and BR those exams even though I won't know which questions to do?