Personally, I feel sometimes confused when rejecting suggested edits, which one option to choose between Invalid edit, Radical change or even Vandalism...
I propose, that it would be nice to have an option (eventually obligation) to get trough some tutorial per review queue, when I get enough reputation to review. The tutorial should show typical scenarios, how to deal with various (at least one per type) kinds of good/wrong posts. Actually, I can imagine it as a serie of few resolved reviews such as you get on review-audit.
