"So I was wondering if someone could sum up how to play D&D and
everything that i would need to know in order to actually play it here." This is sort of like asking "What is it like to be Married?" There are a lot of flavors of D&D, and what people think it should do, how it should be played. Essentially you need to define are you looking for a story, the mechanical wargame / power cards / feats / character optimization aspect of it, or a combination of any or all of that. Plus which edition? Which Version of Which edition? And that's just for starters. I run a hard core 2nd Edition AD&D "Black Book Edition" campagn using Birthright for 2e by TSR with critical hits and fumbles with significant chance of Character death, with no raise, resurrection, or any of that where healing potions cost huge insane amounts. Clerics do not heal full value, like BLING= healed, but more like you get a few points back and it heals over a period of days, faster, with the aid of the gods. Some players say "No, I refuse to play in a game where my character might die. I have invested too much time, over a year or more in my long lost beloved campaigns. You suck as a DM, good luck (sarcastic) finding players." Others say "I love a challenge! I love building a kingdom! Sign me up!" Others say "Hey greybeard! SCREW Old Skool! you guys need to move on, and get with the program! I don't want to play a game that DIED in 2000 with 3rd edition! I want a game where all characters have equal powers, and Each fighter is different!, Different Feats!" So there's a whole bunch of flavors out there. There are books out there that mostly deal with the game mechanics aspect, like D&D for Dummies by Bill Slavicsek. Some others. for 3rd, and 4th edition at least. Older books like Master of the Game, and Roleplaying mastery, by Gygax himself. I suggest comb through looking for players listings or look at
individual campaigns and see if what someone has posted strikes you. Apply, and play. play a variety.