Just like life where trying to do too much will spoil the effort, it's important never to overload a pan or wok. If you're doing a saute or one of the two high-heat stir fry techniques, cook you ingredients one by one, set them aside, and assemble after everything's done -- whether in the pan, the wok or the plate. If you're working large quantities, you can even break ingredients down into batches. There are actually two kinds of Chinese stir fry -- chao and bao. Chao uses a very high temp, frequently involves several different ingredients in the same wok, and often ends with the lid on and a little steaming. Bao is hotter still, and usually more sequential.
When you're done cooking, always clean your wok by adding a little water to it and swishing it around while the wok is still screaming hot. Don't let it cool down before cleaning. Ever.
A flat bottom wok works better than a round bottom wok on most European stoves because it gets the pan closer to the relatively weak heat source. There are trade offs, but "net-net" I prefer a flat bottom. You want to avoid non-stick woks like the plague. Similarly, you want to avoid their companion flimsy plastic wok tools. Those tools -- which don't work -- are just one of the important reasons to avoid non-stick woks. Western minds are often unprepared for choosing the right size wok. Bear in mind that a 14" wok is a medium-small, the equivalent of a 10" skillet, suitable for cooking for two.
Woks made to match western pan sets are a waste of time and money. The best woks are relatively light carbon steel, or heavier cast iron. I prefer carbon steel woks, because they're easier to lift and manipulate. The best Chinese styles are made in China and tend to be fairly inexpensive, but don't look for great workmanship or finish.
If you want to learn to toss turn, the best way is to buy a big bag of rice or beans, go outside with a broom and your pan, and practice until your wrists scream. Clean up the mess. Have a glass of ice water or something. Wait 20 minutes and do it some more. You can hold the pan handle with one or two hands, it doesn't matter. After you get good, learn to do it with the other hand. Then practice with a towel wrapped around the handle -- since most of the time that's how you'll actually do it.
Choosing skillets for saute involves very similar considerations. You want something light enough for you to handle, and tough enough to take metal tools. Not surprisingly, western makers make the best western pans.
Good luck,
BDL
Edited by boar_d_laze - 8/19/11 at 8:08pm