I'm fairly new to the DO cooking as well but I've been successful in most of my endeavors. Like other people have said, I use charcoal. It's easier to regulate the temperature, cleaner and most recipies are setup to use them. There are tons on the internet, but I wanted to show you one thing I really like on this site
About 1/3 of the way down the page you'll see this a box labeled "Dutch Oven Temperature". This guy has added a "calculator" app to his website to help you set the temperature. You just pick your DO size, the temp you want and what type of cooking you want. It tells you how many coals to put on top, and how many on the bottom. Done. The stuff I've done has been pretty simple. Chicken (whole), ham (whole), cobbler, chili, pork roast, baked potatoes, fries, meat loaf, etc...
The key to meat (for me at least) is using my digital oven thermometer so I can monitor the inside temp of the meat in real time. Don't want to over cook it.
Anyway, that site was SUPER helpfull for me and took a lot of the guess work out of it.
2000 Forest River Reflections 327s DP
Toad = 2009 VW Tiguan.
Coupla bikes, coupla dogs, coupla 30-somethings wishing they were retired.