You're not sure you can do it. The best approach is to jump right in and try. If there's something you want to, or need to do, then just get started. Take the first step. That first step may be awkward and slow, but you learn from it.
Experience is the best teacher.
Sure, you can prepare by reading and watching and analyzing. Don't develop analysis paralysis, though. Don't spend so much time preparing for something that you never get around to doing it. At some point, you just need to get started. Once you've done that, once you've made that commitment, you have momentum on your side.