1. Burst
This should be considered the #1 most accurate and the most basic and best way to handle an AK47. If you are given the AK47 the first time, bursting is a definite choice. Even advanced players nowadays who use AK47, 80% of the players burst. I've seen a lot of beginners who are given AK47 just spray and die everytime. This is not the case. But why burst? That is simply because the recoil rate of this gun is powerfully insane. It is the recoil that gives this gun a challenging gun to handle. The best way to burst with this gun, is to move sideways, then burst, move diagonal, burst, and repeat. This process will help your accuracy, making this the most deadliest way of treating this gun.
2. Single Shot
Yet becoming the most difficult challenge of history of CF players, this is highly dangerous. No matter how good you are, if you can't single shot, then you will never, ever beat a single shotter. Single shot simply means spending 1-2 bullets per enemy. This method of the most challenging of all, this will take weeks, even months to accomplish with a little difficulties. Instead of single shotting, it can be very effective to burst, like said above, but just burst to the head, like what I do. Single shotting must NEVER be thought by newbies, this rule only applies for advanced players, ex: xfam0usx, duck.
3. Spray
Finally, the most basic way of treating any gun: Spraying. Many people tend to use this method more than bursting, even with given an AK47. Many many many people spray with AK, even I do sometimes when in a tight situation, and that is the key. If your stuck between grouped enemies, you should not burst nor single shot, just spray. Also, using the spray method when enemies are dead close to you, can be, deadly. Although spraying with an AK is probably not a good choice as the bullets will tend to go everywhere, with it's high power, it can do a medic to you in tight cases. *NEVER USE SPRAYING METHOD WITH AK47 AT LONG RANGES*. Spraying at long ranges can be considered by putting a cat in a tub full of water. This is the most foolish way to kill. But if you look closely, when you spray with AK, the gun will tend to shake upwards, causing the bullets to go slightly upwards. By this, you may spray at around exact body aim, and spray, and it will cause the bullets to go upward, resulting in a headshot.
Overall, the best method of handing an AK47 would be to burst for newbies, and bursting for head/single shotting (if you can) for advanced players. Spraying must not be used at long ranged times, it can only be used at close combat when you don't have time to pull out your melee weapons. AK47 is the most challenging gun in CF, but if used correctly and effectively, this gun, might as well be considered the deadliest weapon in history of CF.
Thank me if I helped ~~