Could really use some help...again..

So I posted about this earlier this week, but so damn lost with it. Trying to get my dash lights / electrical stuff working correctly.
Just weird stuff happening...almost like a short / bad ground maybe... but I really have no clue not circuit savvy..but willing / trying to learn.
Got my cluster in and from what I can tell, all wiring in place. My heater and wiper motor work. My headlights, taillights, brake lights, etc. work. Dash lights don't work.. I've put a couple new bulbs in and still no luck.
High-beam indicator works, but goes off and on depending what position the blinker switch is in. Blinkers don't work. Left blinker indicator on dash stays solid when blinker switch is in the right blinker or off position..but then left blinker indicator light goes out when the switch is in the "left" position.
I have a multimeter, but not real sure how to use it...where to check and what I'd be checking for anyway.