I'm not familiar with any resources for doubles (partners) cribbage. Pegging becomes much more important and long runs can be played.

I don't have any links to provide for you but I can tell you how my family (avid cribbage players)and I play the 4 player variation.

For starters, you must be sitting diagonal from your partner. In other words, each player will always be playing into an opponents hand.

Once seated diagonal from your respective partners. Shuffle, one player from each partnership cuts to see who starts the deal. Once deal is established, 5 cards will be given to each player. Each player then chooses one card to throw to the dealers crib. The cut is done buy the opponent on the dealers right.

All point scoring during play is exactly like standard cribbage rules.

Once the play rounds are finished the player after the dealer counts their hand first, then the count continues with each player clockwise. The dealer scores their hand and crib last.

I hope this helps... Feel free to let me know if we have been playing this wrong.
Bardoo