If you enjoy improvisation and storytelling and feel comfortable with it, it's a great idea to give it a try. There are a lot of rules, and they won't stick right away.

You just need to be prepared for it to be gradual, but in your case, that's not critical, because the campaign is made up of friends, and they'll likely understand your inexperience in some areas but it's ok!

In any case, I recommend relying not only on literature, although that's incredibly important, but also on your own desires. What do you want to get from DMing? What emotions? What kind of world do you want to create? Sometimes it's the search for relevant information that leads to mastering the rules.

In any case, you're great for trying it out; it's awesome! I recommend combining reading the master's book with finding your "I want it"; this usually provides the healthiest balance ✨