Did the same two years ago, it's such an underrated skill. There's a good amount of complexity that goes into making an item without just following a pattern.
I recommend going through the basics (Tock Custom has a nice energy [0]), then picking up a fairly complex pattern for a common piece of clothing. Of course there's also r/myog.
Yeah, it's funny how many times I basically made the same damn thing just fine tuning a half inch wider, or seam allowance.
I also can't believe how tedious cutting fabric is. Even for a tiny project like this it was such a pain in the ass. Even with nice circular cutters and mats and rulers. I'm now tempted to get a cricut 4 to make the cutting easier.
I recommend going through the basics (Tock Custom has a nice energy [0]), then picking up a fairly complex pattern for a common piece of clothing. Of course there's also r/myog.
[0] https://www.youtube.com/@TockCustom