OK, well I can try, I haven't been breeding my mice long. However once again I researched it fully when I took it on.
first, as has been said, DO NOT put two males in the same breeder cage. The recommended mix is anywhere from 1 to 4 (Ive seen 5) females and 1 male per cage, tub etc. My research suggests that 1:3 male to female is usually the most productive. The tank size really depends on how many babies your particular breed of mouse will deliver. I have my colony in a ten gallon aquarium and its larger than the professionals I spoke with say is needed. However, my litter sizes are quite small, still haven't figured that one out! (5-7 max)
Feed, its easiest to just by mouse blocks, you can buy online Lab Blocks. Its efficient and fairly cost effective if you buy in quantity. I personally researched it and got a recipe to make my own, I am not vouching for its success because I only recently started mine on it, (in fact I intend to alter it in my next batch). However, I did get it from a mouse lovers site.
If you plan to raise them to supply others, I suggest building / buying a rack system and running several colonies at once. Then you need to have a way of euthanizing and freezing unless you intend to sell live. (local only) The most commonly accepted method is to put them down with CO2 gas, and then freeze them. This is what I use, my hoppers go down inside of 10 seconds, they just fall asleep. I leave em in the box for a couple minutes to be sure none will wake while in the freezing process as I don't have the facilities to flash freeze. There are other methods, but I don't have the skill to feel safe using them. (Most notably a method that essentially breaks the neck killing instantly.)
That's it in a nutshell, ask some more specific questions and I will dig around for the answers if I don't have em. Its how i stay on top of it for myself.