I’ve covered a fair few systems with one-shot advice so far, so here is a list with all of the posts in it:

13th Age
Dungeon World
Fate
Glorantha (not a system, a setting, but touches on Runequest/13th Age/Heroquest)
Hillfolk
Powered By The Apocalypse (PBTA) games (specifically references The ‘Hood)
Tenra Bansho Zero
Urban Shadows

System-heavy, or crunchy, games
Some generic convention games advice

I’ve got another 2-3 in draft form that’ll appear over the next month or so – if you have any requests, let me know!