mattyharvs26:
There are a lot of good suggestions in this thread and, in time, you will learn why each suggestion is important. The different shots, the different clubs, articles to read, etc.
But you asked about the single best tip for a newbie. I think everyone here will agree with me that the absolute first thing you should do is:
Learn to hit the ding
Nothing else matters if you can't hit your clubs; not the ball, not the type of club, not the shot selection, not the wind, nothing...
Learn to hit the ding consistently and the rest will come.