1) Have to own or buy ETH. As everything with these apes and most NFT's as of now are done on ETH blockchain
2) Download app MetaMask, and create acct. I also linked my app to desktop version, but it's not necessary
3)Transfer ETH to wallet on Metamask
4)opensea.io is the biggest exchange for NFT......that is where you can search projects and see what they are selling for , etc.
5) Your purchased NFT's are stored in your Metamask wallet. I am not 100 percent sure if you can transfer your NFT to a different wallet, etc.
I am just getting into this space myself, and I am not really hella techy, or knowledgeable about everything. I am just trying to learn quickly as I go. Thanks for all responses, and GL to everyone in Crypto and getting in this NFT space.