You ever play shithead? Some adapt the rules to make it easier but effectively every card in the deck has some special rule surrounding it. But the usual ones are 2 can be played on anything and resets the deck, 10 discards the pile, Ace is always high, 4 of a kind also deletes the pack and you can play multiples of the same number at the same time, 7 means the next player must play lower than a 7, aside from 2&10 all cards must be played in numeric order eg, you can't play 4 6s on top of an 8 to delete the pack, you have to beat the card previously. The aim is to get rid of all your cards, if you can't play you pick up the deck. Google may help with a list of common special rules for cards and perhaps a YouTube video. But it's a really fun game.

3 cards are dealt face down and are blind cards and must be played blind. Each player is then dealt 6 cards. 3 must be placed face up on top of the face downs. You must have played all your face ups before you can play your blinds. You play from your hand of a minimum of 3. Until all the cards from the undealt deck are in circulation. (Play a card pick one up, until there's none left). Once all cards are in circulation, it's just a race to get rid of all your cards to win.