Bartleby

Alright. New lad here. I am hoping to get a 3/4 grey 1/4 border collie at some point in the near future and I want to get a crate for it. Anybody got any experience with crates, where to buy and what size should I be going for? I want it initially for house breaking but hope to be able to keep the crate for the dog as it gets bigger so will need a divider I guess.