@wardred The vast majority of essential shortcuts feels like they’ve remained static since 2.7ish (i forget what i started on, but it was a long time ago). But currently there is a search function that you can use, and also the ability to favorite things (which i personally haven’t really gotten into the habit of using but probably should).
Every time I’ve felt rusty Ive just done a really basic tutorial in the newest version to reacclimate. The low poly rocket tutorial should be pretty good for adjusting to the 2.8+ layout and remembering the basics.
If you feel like nodes are difficult, I’d recommend the procedural eyeball course. It was probably what really cemented nodes for me.
But honestly, i just use search engines to find things that seem to have changed, moved, or that I’ve simply forgotten.