first time anal

so our 1 year wedding anniversary is coming up and we are planning on renting a house on the beach. I know he wants to do anal cause he plays with my asshole and fingers it when we are fucking and I enjoy it and when he stretches my ass cheeks out when he's all the way inside me. I was thinking of trying it on our anniversary just as something extra, it's going to be a weekend of firsts for us. please give me any tips, positions, lube to buy....thank you