1. things need to get up to a certain speed before they start holding. It's not unusual for the heli to turn a bit on a slick surface as it's spinning up but should settle once you get close to hover speed.

2. proportional adjustment on the 3-in-1. Did you get a manual with the heli? It's explained in there. You can download it here if you didn't get one:
http://www.horizonhobby.com/ProdInfo...LUS_Manual.pdf

3. Yes, it's normal for the heli to want to slide left. This is due to the thrust from the tail rotor. Once you get in the air the heli will tilt right a little in a steady hover to counter the tail thrust but on the ground it obviously can't do this.

4. I don't know what you're trying to say or ask here.