i posted earlier about lube specifically, and thanks to everyone whos helped me with that. but now i just want general advice

again, me and my friend (both closeted, 18) are looking to have sex soon. im prob (definitley) gonna be topping. ive had sex with a women a few times before, im not sure about him.

please give specific advice about anything you can think of. ive done research on condoms and STIs and allat. heres a few topics that id like to hear about

-positions -first time top stories -first time bottoms stories -specific conversations we should have -not to sound arrogant have a pretty large penis, and i dont want to hurt him -we had a lil interaction, no anal sex was involved but oral was def there. he says he wants me to be more dominant -im open to being more verse, but hes strictly bottom and doesnt even want me giving him oral. i be wanting to grab my ass and finger me but he puts a hard no on that and its a wee bit frustrating

ik some of these are personal and theres not much that you can say. but i just wanna know what i can do or any advice the gay veterans can give a rookie