Let's tell justibone to make that thread so we all can contribute to our awesome cause!
I would gladly make such a thread, but it's better to keep this one going. The page count is intimidating, I agree, but if you read the first 20 pages and the last 10, you get what you need to know.
Basically, all you really need to know is: it's very difficult to make a beer taste *exactly* like something. Professional breweries spend millions of dollars doing so every year in this country, and they still don't always get it right. (Watch the Dogfishhead T.V. show episode on 120 minute IPA, if you don't believe me.)
So, it's hard to make it taste *exactly* like something, but the good news is that it's easy to make it taste *good*.
Beer wants sugar. There are two kinds of sugars -- simple, and complex.
Simple sugars (like sucrose, or dextrose) are very high energy, and they give the yeast a sugar high. (Not literally -- yeast lack an endocrine system, but you get my point.)
Complex sugars, present in malt, are harder for the yeast to eat all the way to nothing, therefore leaving a bit of sweetness and body for you to taste.
The more simple sugars, the closer to _water_ your beer is going to be. The more complex sugars, the closer to _sugar_ your beer is going to be (malt). That's why the alcohol boosters thin out your beer -- they are simple sugars. That's also why it helps to heat some actual grain and put that heated mash (hot water that the grain soaked in) into your wort (pre-fermented beer). More of the complex sugars and also good proteins will make it into your beer if you start with a little bit of grain and then add a bunch of sugars (extract) to it.
So, if you keep in mind that it's a battle between simple sugars (Snickers bars for yeast) and complex sugars (hard to break down)... then you will make either clean, crisp beers or mouth-filling malty beers, whichever you prefer.
Don't use the booster in your beer, unless you want thin beer with high alcohol content. That is the purpose of the booster.
Also, try to avoid hopped extract, the same way you should try to avoid pre-seasoned grilling meat at the store. Sure, it takes away a step, but it gives you less flexibility and control. Hops are just another kind of seasoning -- add early to get some bitterness, and add late to get aroma. Easy!
But hopped extract is "no mi gusta", IMO.
Also, I've found that dry extract tastes better than syrup extract, for whatever reason. To use dry extract in a syrup extract recipe, just divide by 1.1 -- so in my Simple Wheat recipe you'd just use 3 lbs. instead of 3.3 lbs.
You can convert any recipe to MrBeer dimensions by cutting the ingredients in half, and then not adding quite as much water. It will not taste *exactly* like the recipe did for the recipe inventor... but it will be pretty close. If you fill Mr.Beer up to the 'Q', then it's 2.4 gallons -- so it should be good enough for government work.
Anyways, keep posting your questions here, or over at MRB forums... just keep making beer! It does get cheaper when you get away from the proprietary stuff, and you can also take more pride in your work. After all, what's better than sitting back at the end of a hard day's work and drinking a beer you made yourself?
...Drinking it with your wife, really... if you happen to like her. I like mine, so, that's the best ending to a day I usually get.