The advice given to date is good except don't worry about the on-track material as you will be given essentially the same material at the start of the course. Standards Doc 10 is very useful - especially getting to grips with the questions at the back of the document. The aircraft which will be used is a PA28-161 and a Zlin 242 (for the spinning). The main thing is to try to understand the EASA PPL syllabus and refresh your technical knowledge. There should be 3 of you on the course and the interaction is usually very good. Hope that helps.