The one thing (the most important unfortunately) that i can’t get is the snap of the string after the throw under the throwhand, that allows the yoyo to land into the back string. Don’t know if anyone else had this problem and found a solution to it, but any suggestions would be great.
I had trouble with this , too. Try swinging the yoyo as close to the tip of your throwhand pointer as possible. This will allow the yoyo more room to land on the back string. Other than that, I don’t know how to help you.
Hope I helped!
This helped me:
Also keep your throwhand “L” wide, spread thumb and forefinger well apart. That seemed to be what I was missing to get the “snap”; as far as accuracy hitting the right string, well I’m still working on that. 
WOW. Thanks Kid, Bob and brad, trying to get it closer to the throwhand was the problem, i had it too far. Threw it closer… got it first time! sick. Again, thanks!