There are many ways to approach this exam, the most common is to attend an academy, compounded with repetition of the stations with a focused plan and detailed knowledge of the scoring matrix.

How PLAB 2 has changed with coronavirus.

Official GMC recommended resources

PLAB 2 Academies

Most academies have similar pass rates and are fairly intense. It would be wise to consult a friend who has recently sat the course or even join with a friend. Ultimately once you show you are a good doctor and score well consistently across the domains you will do well. 

SAMSON - printed documents, station feedback with video and - MOCK exams

HAMED - simulation, digital resources and various courses.

Top tips on how to avoid errors in the PLAB 2 exam.

Disclaimer : - Numerous others (I have little experience with - Google PLAB 2 academies).