I don’t quite understand why for example two letter E you credited the suspense account. should it have been you debited the suspense account to increase the purchases amount?
No – purchases is a debit, and so to increase we need to debit purchases and therefore credit the suspense account.
Are you watching the free lectures, because in the lectures I work through the examples and explain and expand on the notes. There is no point at all in using the notes on their own – if you are not watching the lectures for any reason then you need to study from a Study Text of one of the ACCA approved publishers. The lectures are a complete free course for Paper F3 and cover everything needed to be able to pass the exam well.