I just wanted to follow up on this - thanks to everyone for the advice. I ended up running several low-level dungeons using Duty Support to get a good handle on the fundamentals. I did finish the Sage's Focus quest today, doing those low-levels helped a lot. I did also have to keep the NPC focus targeted, but I already have plenty of practice using focus targeting from when I leveled up WHM. I do still think that quest is a bit tough for a tutorial but done is done. Thanks again!