Wear the right clothes. Check ahead on the dress code at a course you're playing to avoid last-minute, expensive purchases from the pro shop.
If you're sharing a golf cart, try to opt out of being the driver if you're a newbie, as it's just another thing to have to focus on.
Start with half a set of clubs, and make them second hand ones until you know you're committed.
Enjoy yourself! Remind yourself that golf is a leisure sport, you're not Tiger Woods (yet) and that it takes a while to become proficient.
There are iPod-ready golf tips at Worldgolf.com, allowing you to gen up on your technique whilst on the move.
To hit high out of a sand trap next to a green, open you club face, rotate your stance, and aim 2 inches before the ball.
If you swing hard with some of your clubs, for example your driver, put your back foot back about 3 inches and play the power draw for a straight shot
To get really good you have to play regularly and continually refine your technique.
Golf Magazine has great little tips that help your game
If you're taking up golf, head down to your nearest car boot sale - there are nearly always good golf clubs being sold at affordable prices.