You will need to check your own syllabus, as there may be one or two that you don't need. Or one or two that you do.
Some of these formulas already appear in gcse.com. Others do not, as the tutorials have not yet been written!
If an equation appears that you do not recognise, then check your syllabus. You don't want to waste time.
To learn formulas, one of the best ways is the Primary Method of Spelling (PMS). Read. Cover. Write. Check.