NFT's on Cardano

Hi to the Cardano Community, we are the best!

Guys, so I am creating a collection of NFT’s for the Cardano Smart Chain, I minted a few of them with, but I want to know how do I mint my own NFT’s send them to a wallet and in that way I can send them to potential buyers or as freebies.

Example: I’ve seen some websites examples like cardanokids or spacebuds that they do a presale of the NFT’s. I wanna do something similar.

Please help, I am not that tech savvy.