I suggest you to have a full Nail technican course first ( That actually teaches you everything without promoting you any special product line or brand ) and after that, you are good to choose or your brand(s) ( then you know what are you looking for).
After you've completed the full course you could keep your eyes open for "Products courses "
Do you mean a college based nail course?
These courses are not so great in the uk and Ireland. The product courses are much better in my opinion.