Welcome to the forums!
I guess the first step would be to introduce yourself, tell us what your goals are, and where you currently are on that path by posting some of your current art.
For Art School it self, find the "Art School Weekly Study Companion Guide" PDF and follow along with that. Progress at a comfortable pace and learn as much as you can from each week, but don't let the week-by-week pace/breakdown stress you out - improvement and learning is the point. I'm on Term 4 Week 2 and I started at the beginning of 2024 (but have a background in drawing and indy comics).
Post on this thread as often as you like to show your work and ask for feedback. Engage in the community here by visiting other people's threads to give support, leave comments/likes, and give critiques (but only that last one if the person has indicated they want that kind of thing - feel free to do that on my posts).
There's also a Discord, but it's a bit too busy for me and feels like more a social media distraction than a tool to help me improve my art.
Good luck on your journey and may you reach your goals!
Cheers,
-jSt.