PSA and BNF and Medicinecomplete

Hi everyone! I am an IMG and I need to take the PSA. I hope you can help me out.

1) I want to familiarize myself with the MedicineComplete interface, but I don't have access to it. It only allows institutional access. Since I haven't received my NHS email yet, is there any way I could buy a one-month subscription to MedicineComplete?

2) When checking interactions for a certain drug (say paracetamol), the BNF website only shows a long list of drugs that interact with it. Is there a faster way to check interactions among the drugs listed in the question? If so, would this function be allowed in the actual PSA test?

3) Which one do you recommend using: BNF or MedicineComplete?

4) Do you have any personal tips on passing the test?

Thank you!