This is really helpful. I think I mainly get stressed out with the time limits, as well as the often convoluted wording. Thanks for the response!Last year I failed all WG and SJT tests - this year I passed them all! What I did differently was to practice about 10-20 minutes per day for at least a month before taking any tests, rather than doing 1-2 hours solid prep the day before.
WG tests - I used all the free tests (literally google WG practice tests or critical thinking tests and loads come up). I also made my own cheat sheet on one side of A4 - you can download others, but I found making my own more helpful as I could make notes to myself on areas I make the most errors.
SJT tests - honestly I found I just got better over time. I think reading as much as you can about what a trainee actually does (mostly admin) coupled with the firm's values helps you pick the right answers.