Brain bench tech support questions ?

Okay so today I went for my staples training and had to take a tech assment to work on computers as an easy tech. I failed by 2 questions but said I can retake again. I found where they get the test from and it is from brainbench. Anybody have any tips on what to study if they know some questions on from bb? Yes they have practice tests but at a fee of 25$! Any easy techs out there ??????