Try out the game to determine your preferred playstyle. There's no pre-determined classes.
BUT
Might want to get familiar with the different perks and to develop an idea of how you want to allocate your points before you start spending them. This might save you regretting hasty choices and eventually starting over once you know what you actually want.
Do a little research, play around with the game for the first couple levels, then decide how you want to play and you should be more than fine

.
Either way though, nothing will go wrong.