Brand new used to skate as a teen, but not all that great. Taking skating lessons and in love. Want to get nice and smooth now. Not trying to be that fancy. Just a little razzle dazzle. What skates s h would I invest? (On a budget)

I'm creating a roller skate buyers guide and I'm curious what questions do you guys have around buying roller skates, equipment, parts, and accessories? It could be as simple as what is a good first pair of skates or as high-level as when do I know if it's the right time for me to upgrade to custom top-tier pair of roller skates. Lay it all out because I want this to be a comprehensive guide for beginners and advanced skaters alike.