Yes to all the previous advise. Also, don't be afraid to abort your take off if it gets too squirrely. If you find you are chasing it almost out of control early in your take off run, cut the power, get the tail back down, taxi back to your start position and give it another go. Same as you should do a go around if your landing approach is not right, so should you abort your take off if early on it goes bad. No shame in second trys if they are successful. If you're going to abort a take off it must be early, before flying speed is reached or the runway is used up, or by then your committed and must fly it no matter what (not good). Feeding power in slowly as you steer the plane with the rudder will help keep it going where you want. Don't slam the throttle forward quickly, gently continue to feed in more power as the plane picks up speed. Be smooth! And if you're flying off pavement with a crosswind all this becomes even more important and all that practice you did pays off.