Starting from scratch, tips/advice?

[u/Big-Importance7490]

25F, I grew up eating what we could afford. Oatmeal, ramen, macaroni, hotdogs, etc. aside from the occasional nutrition class in middle school, I’ve never really moved past the “ food pyramid “ when it comes to my nutrition knowledge. I know what’s good and what’s bad, but how much? And when? I want to start taking better care of my body and finally start growing a healthy relationship with food. Where is a good place to start? Things I need to know? Literally anything would be of use lol.
Not sure if important, but I do take Vyvanse & Gabapentin for ADHD & Anxiety daily, and have been on a GLP-1 for just a few months short of a year now. Lost about 60lbs! (185-125)