RPG

Ive heard of dnd players playing solo but like how does that work compared to with a party? i dont really have anyone to play with and i dont really like online games of dnd, but for real how do you play solo becasue it looks hard but also interesting.

another dumb question but do player sell there dnd notes, is that a real thing becasue ive wonderd if dnd players actually do that or if its just a joke.

as you can tell ive only played dnd a few times and that was with a few horrible partys or ones that just gave up after one session, so im kinda a noob and i love player the most crazy classes or a wizard/magic user. also wher eis a good place to find free custom rpg content for games such as dnd?