Quick scenarios is the best way to understand a game. Do a few quick examples of how rules work to get an idea. This approach has savede a lot of time in the back end and largely the reason why I have improved at logic games
A quick bracketing and notation of C for conclusion is a huge help. Same goes for P premise. For me that is step one after reading stimulus. It only takes a second and really situates the statements as they pertain to the argument.