What is a good effective practice schedule? For an individual player..
This is a very good question, though a lot of it will depend on how much time you have available, what your goal is and what said player needs to improve upon. The topic of individual improvement has a lot to do with aiming, but I really don't want to get into that right now, so I wont go over the specifics but instead I'll give you a general idea of how practice should work for an individual.
• Set a time schedule, and stick to it.
This is easily the most important part of developing yourself as a player. It's extremely easy to cheat your schedule and start late, or justify skipping it entirely with arguments like "I played longer than I was supposed to yesterday, so It'll be fine." It's all too easy for one day to turn into two, turn into three, and eventually you're off your schedule all together. Set a time to start and end practice, write down your goals for the practice (improve aim by doing X, improve smarts by doing X, improve nade mechanics by doing X, etc...) and stick to them.
• Track your progress
It's way too easy to give up on something you're doing, because you don't see any immediate results. You have to track your progress to fully understand what direction you're going, and make the right tweaks to your regiment to maximize the time you have available. A simple way to track progress in aiming, would be to find an aiming game with end-game values that you can compare on the weekly. Intelore's Reflex is a good example (http://files.filefront.com/Reflex+game/;.. Now, this isn't a direct evaluation of how good you are in game, because this is not a fully 3D test with the same sensitivity, but it's safe to say that your improvements in game will correlate to some degree out of game in these types of tests and tracking systems.
Note: This test has some issues at times with faster computers, and may make the targets instantly appear. If this happens, just restart the game a few times (happens about 1 every 10 times you play). You can also go to the start menu, and launch the soundless version of the game to play with your own music.
• Understand what it means to practice
Let's assume you dedicate a three hour block of your day to getting back to where you were as an individual player. First of all, this is practice time. This doesn't mean this will be the only time you'll be playing CS, simply that this is the time dedicated to your improvement, above all else. This isn't about enjoying yourself, though it's fine if you do. If you're really serious about achieving a goal, you have to play to improve, not to have fun. There will be plenty of time to have fun later. Be sure you practice with the methods that you've come to understand as the best ways to improve different aspects of yourself as a player, not necessarily the methods that are the most common or most fun.
When you burst with ak should you let the crosshair come all the way back to its small orig size or should you not wait and shoot again when the crosshair is like medium size.
Aiming based on your crosshair is a bad idea when it comes to dealing with recoil. It's the direction of impact (bullets) that you want to be paying attention to. Off of the top of my head, and explaining it the best way I can, you can do a normal burst of 2-4 bullets, drag and tap two or three times with the taps remaining pretty accurate, but you really don't want to focus on the crosshair at all. Also, it would be a good idea to quick tap rather than burst in most situations, since it locks your opponents up better and just as accurate, albeit a bit slower. Burst when you feel you've got the aim to not miss, or the situation warrants it.
When peeking around a corner and seeing like 3 guys there i always go crazy and spray in their general area while backing away quickly hitting nothing how do i fix that?
What that tells me, is that you weren't expecting the opponent to be there. If you were, you wouldn't be taken by surprise obviously. Start thinking further ahead, and if you're in a situation where you wont have time to take cover and there are multiple enemies, concede you're going to die and focus on the easiest target, and then the next easiest and so on for as long as you are alive.
How do i learn how to track moving targets?
Through repetition. Lots and lots of repetition.