Avogadro's, Boyle's, Charles' -- do I need to know those by name or can I just play around with the full version of P1V1/T1n1 = P2V2/T2n2 and go from there?
just in case...
I always remember boyle's law as constant temp because boyles sounds like boiling.
For charles law I remember it as constant pressure because I had a premed friend named charles who was always under constant pressure.
It is silly but it worked for me.