Again, not an expert by any stretch, but another helpful thing for me has been just going to an open field with as many discs as I have and just letting them fly over and over. Just be careful not to over-do it, you can hurt your shoulder and elbow faster than you think.
I think all new players go through the always a hard left hyzer issue. What helped me was always trying to throw with the outside edge of the disc up, like for an anhyzer - but throw it as straight as possible and try to keep the leading edge down a bit. They'll start off turning right but will straighten out and won't fade left until they slow down.
You might also look at some discs that are more stable or even a little understable. Ideas might be a Innova SL around 163-167G for a super stable disc (they are a little hard to find right now) or a Discraft Avenger in the same weight range for an understable driver. The SL flies really straight and flat and the Avenger has a tendency to turn to the right.
I made the big mistake when I started of wanting to throw big distance drivers and didn't pay any attention to the weight.
I eventually got it through my head to "disc down" as they say. It means start throwing mostly midrange and putters and reduce to fairway drivers (like a TeeBird) off the tee box even when you know you need to go a long way. I found that the experts were right and that I can throw a midrange (I'm currently using a Buzzz) almost just as far as a distance driver, but with much more accuracy and it's teaching me a lot about my form.
You have to throw a distance driver really fast for it to fly like it's supposed to. Any slower and it will start it's fade almost immediately (thus an instant left turn hyzer). The heavier discs (170 and up) also have to be thrown faster to fly normally.
Hope that helps a little friend. I plan on starting a "Beginners League" next spring with two tiers: first year players and second year players. Watch out for that and I hope to see you out there.
2013 STLDGC Tag #107
2013 SCCDGC Tag #78