Where can I go to learn how to do basic sprite edits?

[Graceon]

I’m trying to make a custom sprite for the Pokémon black 2 and white 2 male protagonist for my first step into the ROMhack scene, and I have no idea what I’m doing. The first step would be to make edits of the sprite and then replace them in the file location and make sure the game reads them correctly, but I have no idea how to do that. Any guidance on where to go to learn more or any general advice is welcomed, I’m as new to this as it gets.