Okay, here's few good websites to get you started:
Keep in mind we're discussing ACT or aerated compost tea, where the purpose is to add beneficial biology. This is quite different from nutrient teas or manure teas or non-aerated teas.
www.gardeningwithmicrobes.com (some basic articles, recipes, etc...)
www.microbeorganics.com (more info, just a little harder to navigate)
www.simplici-tea.com (good lab tested small brewers)
www.soilfoodweb.com (click on about us, then sustainable approach)
Hope that helps!
I think we need to put out some nutrient tea recipes and ideas as well.
So, this is what I use and do for a worm casting tea. When I scoped the tea after 24hrs I saw nothing that appeared to be alive, though, so do what you will with that information. Amounts, for me, are not hard or fast, just general guidelines. I use mostly 5gal buckets and only have an aquarium pump (double outlet pump, can do a couple of trash cans and some buckets).
1-2 cups worm castings, the newer/fresher the better
1tsp-2Tblsp molasses (which can be substituted with another sugar like malted barley extract, panocha, date or palm sugar. I've not yet tried table sugar)
You can either put the castings into a paint strainer, or just dump them in the bucket, and let them bubble away, or let them sit. I like the agitation and better aeration bubbling provides over just letting it sit, plus a scum forms more quickly on the surface if I don't aerate.
Let it set for 12-48 hours, then use alone or diluted. You can add other things to the mix as well, like seaweed/kelp, or alfalfa in whatever form you have it.