I won't be able to teach you. A friend taught me most of what I know. I can only recommend the app Aseprite. There are tutorials online on how to use it; they'll explain it much better than I could.
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Aseprite has a way that you can install it for free. Just google Aseprite free download. Its the first reddit post that pops up "Aseprite is free" in r/PixelArt. That will get you that suite for free. The ONLY issue is that you have to reinstall it every time you want the latest version. That said, there's libresprite (forked off of Aseprite after it went paid) that isn't as robust, but just as good (since it is a fork of the original).
Good luck, Ken Master!