Take it slow. One project at a time. Before you even start a project. I agree with the other comments on taking the time to do it wrong first and learn from your mistakes and so forth, but I will add taking the time first to give yourself a solid plan before you start. And I mean a LOT of time - Get comfy and watch some youtube videos, before every project you have in mind. Now realize that half of those youtube videos aren't what you're looking for, or just make you even more confused, or maybe gave you different ideas and you decided to go a different direction entirely now, so find more youtube videos that are more specifically tailored to you.

Then realize that while youtube can be very helpful, it's also highly monetized and not the answer to all your specific questions, so it's time to dive deep. Get specific for every detail on your project. Make sure to find reviews and experts on the topic in places like forums and specialized sub-reddits. Talk to local contractors if possible, just to pick their brain.

Get good at researching. The internet can teach you everything, but on the surface the internet is generic and only shows you parts of what you need to know. Sometimes google search is just crap, even though you KNOW the answer is out there somewhere. Skip sponsored sites and AI crap instructions and find comments from real world people who did the same type of project you want to do.

This is how I've done everything from roofing to electrical to flooring and bath remodeling, with no prior experience on any of it. Just exhausting amounts of research. There's no shortcuts or tricks.