Don't be a noob IN CSGO!

Movement!

Stutter Step

The stutter step, also known as the stop shoot, is a technique that pro players use to own everyone. A lot of pros I know use it, and don't even know they are using it because it is so built in to their habits. Basically, when you are strafing to peek a corner, you tap the opposite directional movement key to completely halt your momentum. Think of it as cancelling out you momentum. This is a very quick tap. If you hold the key down too long you’ll start momentum in the opposite direction instead of coming to a complete halt. If you do it fast enough it looks like you're not even stopping. Go into a server by yourself and practice stop shooting at walls. Shoot a square into a wall, and focus on getting your stutter step shots into that square. When you master the technique you will be able to juke back and forth with ease while firing perfectly accurate shots.

Peeking Corners

Never, ever, walk around a corner. If you walk around a corner your opponent will see you infinitely sooner than you will see him. The only exception to this rule is when you are AWPing. Always use full speed to check a corner. CS won’t play a foot step sound until you reach a certain speed. When you do this technique properly you can peek at full speed without making a sound.

Lanes

There are "safer" lanes in every single Counter-Strike map. There's a way to move where you only expose yourself to one angle at any given time, while at the same time playing the inside lane. When I say play the inside lane, I mean always be on the inside of the threatening corner. ALWAYS. The only exception to this rule is if you are walk peeking with an AWP but that's a separate thread entirely.

An example of an inside corner is hugging the left wall as a T pushing A long on Dust2. The reason you always hug the inside corner is that a peeker has to fully expose his body to peek you. This gives you more time to make the frag. A lot of newbies run up the outside lane thinking they can see a defender first, but they're just going to get shot by a peeker’s left eye ball.

It's also very important to understand that you won't be able to make it if you don't know how to lead your team. Take care of those noobs!