This isn't supposed to be the A to Z of how to play WGT well, just a few things I've learned during my time here that may be of help to those starting out and finding the game frustrating at times.
In no particular order.
Clear flash cache. Of all the possible combinations of any three words these are probably the ones most used here. But, just because an answer is very often the same does not make it a stupid one. Quite the contrary, it's said so often because it's true. I would advise all players to have this site bookmarked and to delete media5.wgt.com at least once a week.
Drop the hybrid and get 3 wedges. This is vital if you want to score as well as you can. Once you have a decent set of irons you'll find the 3 iron hits as far as your hybrid which makes it redundant. Get a 64 degree wedge and 2 others that fill the gap between this and the PW supplied with your iron set.
Get high loft irons. High loft means the ball is landing on the green at a steeper angle and will stop better, generally a good thing. Some roll out will be helpful at times but you can control this by adjusting the spin applied. High loft will allow you to do either, low loft clubs will often rob you of any chance to play darts.
Learn the short game. Especially the punch shot with your wedges, it really is like having three extra clubs in your bag. Whether you also use pitch, flop or chip is a personal choice. I almost never flop and really never chip but know many people who swear by the flop shot, each to their own. The main thing is to be confident of getting down in 2 from just off the green.
Find a ball you like and use it all the time. This may not apply to those on a very tight budget but I think there's no point in working on your game in practice rounds if you use a different ball to the one you then use for rounds that count. You don't have to use top dollar balls, I play with the 250 credit Cally and it works a treat, mostly because I usually know how far it's going to go and how it will react when it lands.
Accept the little quirks the game has. And some of the big ones. There are several things that can easily catch you out, if you know about them you can watch out and hopefully won't get bitten. These include:
You're on the green and have a putt that needs a different meter to the one you're given. You change the meter. Then, you use pitch view to check the break of the putt. When you go back to putt you are automatically given the original meter again, I've been caught by this a few times.
You have a putt from the fringe. The caddy will probably give you a 150 foot scale, even if the putt is 10 feet. Change scale and smack him with your 3 wood.
That same idiot caddy will also suggest you chip out of rough if you're very close to the green. Apparently he's never played golf. Or watched you do so. Never, ever chip out of the rough. Unless you like doing it because you'll be faced with exactly the same shot next.
There are also quirks we can do nothing about:
One annoying thing I've noticed is approach shots to greens with an uphill slope. If you land short the ball will spin back, damn near every time. If you land a bit long the ball will run on. BPB #13 and St. Andrews #11 are good examples of this. Try not to let this get your blood pressure up.
Your shots are not going to go where you expect them to, even when you do everything right and hit the ding. There is some variation built into the game, there has to be. If not it would become boring within a short space of time.
I've no doubt there will be many other suggestions as to how you can get the most out of the game, this is just a collection of my thoughts. I don't claim to know everything about the game, probably nobody really does, if this helps one person save one shot during a round or have more fun playing then I'll be well happy.
And hopefully you will too, this game is a lot of fun. If you let it be.