Worried about CPC Bus Theory Tests

Get reading the sample Case Studies. Revise your Multiple Choice material and Driver Theory Material hard. Read all the sample Case Studies and spot the simple errors. (e.g. something like "bus proceeded at 120km/hr" when the speed limit is 80km/hr or 100km/hr on dual carriageway/motorway).

Nothing really for it other than sitting down and learning the material off. Idea of the Case Study is to demostrate that you fully know, understand and can apply the material covered in the Driver Theory Test/CPC Multiple Choice rather than just knowing that the answer to any question is a, b ,c or d as appropriate.

Depending where you are based there may be classes available. But they simply do what I have suggested, i.e. taking the case studies and going through them.