Welcome!
1st: Buy a good brake controller if you don't already have one. Prodigy is highly regarded and runs about $99 off the internet.
2nd: Weight Distributing hitch so that all the weight is not sitting on the ball of your Tundra and you're not dragging a$$.
3rd: Turn off overdrive while towing.
4th: Don't tow over 60mph for the "best" gas mileage.
5th: Relax and enjoy the drive!