Breading is a very simple procedure that follows a basic guideline of dry wet dry rest. For a basic breading you will typically do flour, egg wash, crumb of some sort. Flour is used first because it is the base you will build on and because it is very fine and has a lot of starch binds well with the moisture of the meat or veg you are coating. Next is the egg wash. We do this next because while there is moisture on the food there just isn't enough to hold the crumb, and the proteins in the egg really help hold everything together. Why the flour first? Again, it is your base and glue that helps hold everything to the actual item being fried. Egg will stick to the meat, but does so much better with the flour. Next is your crumb this can be anything from fresh to toasted, pre made, or crushed cereals. Basically some form of cooked starch that will get nice and crunchy. Personally all of my seasoning goes into the egg mixture. The flour I don't season as a personal preference I think the egg holds it better. I never season my crumbs because the seasoning then can burn much easier. Then just let rest for a few minute to bind everything together and set. Some variations are- Mix the flour and bread crumbs (works well with bread crumbs of most sorts, not so much with crushed cereals). This saves a dish and gives you a thicker breading. Just dip in flour/crumb mixture, egg, flour/crumb mixture again. We always did it this way growing up and it worked just fine. You can also replace the flour with pancake mix, gives very nice flavor just get one that doesn't produce something to terribly sweet (one more reason to make your own pre-measured mix). Great for shrimp and works surprisingly well with veal cutlets. Also creates a bit different texture then flour due to the sugars and leavenings. If you want a really light, relatively thin, crispy coating use egg whites only and no crumb. Just do flour, egg white, flour. Really nice light and crispy, great on mushrooms or chicken fingers. Do a chicken breast this way and top with cheese, sauteed mushrooms, and more cheese, makes a great meal.