I echo the info about grip and posture. But these are also pretty good drills and ideas...
1. Hit shots with your right foot back and learn to hit a little push draw (right to left shot). This is HUGE. Do this on a tee, then gradually move up to hitting shots off the ground. Eventually, you'll get a nice little draw and your contact will be great. In YT, search "right foot back drill".
2. Learn to use a video camera to properly so that you can make sure you're aiming right and your shoulders are properly aligned. Don't get too much into technical stuff for a while. Mostly make sure your right arm is a touch under your left at set up (bent comfortably). You'll feel a little closed. Good!
3. Use 2 alignment sticks (properly) with the ball in the middle on the range to get a sense of how to aim properly.
4. Dan Carraher's takeaway drill is pretty cool: https://www.instagram.com/p/ByN9TMMFGh-/?utm_source=ig_web_copy_link
5. Combine the above with practicing bringing your hands down to your hips with your shoulders still turned (drill #1 is good for this). The shaft should be pointed just inside the target or at the target and the clubface pointed almost to the ground. This is something you want to do as a practice swing.
6. Hit foam golf balls into a net. Or, do drills off a tee for a while. Then graduate to hitting balls off the ground. Getting rid of where the shot goes is very helpful when you're learning new skills. There are tons of good cheap home nets on Amazon.
7. Hit 8 irons 90 yards when you do drills. You cannot learn a new motor pattern at full speed. Your brain won't let you.
8. Never practice your full swing for more than 20-30 minutes, and really overdo the drills in your practice swing. Try to hit a ball once every minute or so.
9. If you practice driver at some point, set up properly (there's loads of videos on YT for this), and use a little trick where you line up with the club about 6-8" behind and slightly inside the ball.
10. Find ONE teacher and stick with her/him.
11. Learn to chip and pitch decently. You can buy Dan Grieve's The 3 Releases for Kindle pretty cheaply on Amazon. It's a great book, and the info is fairly simple.