I'm in a game that has a lot of first-time players (myself included) however the person I am questioning I do not believe is a first time player.
We've been playing for about 6 months now (October - Present) though our Warlock was gone for the winter quarter and missed the previous arc (nbd). I didn't know a lot about DnD when we were playing in the fall but after winter quarter I had a better sense of what well, made sense in DnD. And I noticed some...odd behavior from our Warlock.
The main thing I noticed that was fishy is that after an incident where we (accidentally) killed his familiar (an imp) he claimed it was a messenger from his patron (fair enough). I asked him who his patron was and he said "I don't know who my patron is" which isn't right, isn't it? I asked out of character because I thought they had to choose and my DM was like "yeah they don't know where their magic comes from" but i looked it up and the choices in the Players Handbook were "the Archfey, the Fiend, or the Great Old One," which all have specific boons.
Does a Warlock then have to know his patron, or can he just not know it? Will he miss out on his boons?