Best way to study verbal

Is it better to complete vocab mountain and then to solving questions or can they be done in parallel?

Following whatever is in the study plan would be the best.

I tried to do that but the study plan has some sections that include question solving. I found questions have words that I do not know.

Oh, you can look those up I guess as the questions are for practicing strategy not vocab, as long as you learn your vocab separately, that’s okay.