If you're trying to get into the game so easily, without reading this, you're going to have a bad time.... becouse Counter Strike: Global Offensive it is not a easy game, mostly becouse you're going to meet, from Noob players, to Experienced players...... In any case you got to be ready.

First: LEARN THE MAPS: something very important in CsGO, is Knowing the maps, becouse many times you'll be confused about where the bomb is or where are the hostages, or maybe you'd like to know some shortcuts that Allow you to make more faster in the map.

Second: TRAIN: Even the most Pro player in the world trains... training, is one of the most important things about csgo, from the most simple to the more difficult, knowing your Advantages, and Disadvantages, becouse knowing what your game-style is very important to your Role in the Team.

Third: KNOWING THE TEAMS: sound stupid right? but... it isn't, knowing your team, and your teamates, is very important to your game, knowing your position in the team, if you are a sniper or a rusher. sometimes, you'll be counting on them, and they will be counting on you..

Forth: LEARNING THE WEAPONS: There is a lot of weaponry that you are going to use on the battlefield.... from the Awp sniper rifle to the knife, and you need to undertstand them each one of them, their recoil, and precision, and ranges, and damages, and ammos, and a lot of things, that Change your game style.

Fitfh: YOURSELF: your player, also do sounds, while running or shooting, there will be a red dot on the enemy radar. so that is not convinient, right? well here is a tip: if you crouch (Ctrl) or walk (Shift) the enemy will not be able to hear your steps. also there are some weapons like the USP-S that have the silencer incoperated. try always to go stealthy becouse you pop your head or your weapon by accident, and you're going to get shot.

Six: OBJECTIVES: If you're kind of a newbie and stuff, you need to learn what the objectives are, from planting the bomb being terrorist, or rescue the hostages, being CT.

when you know everything that i've said before, I'm going to teach you some little things that might be great for your pc expierience or gameplay...
anyway, let's get started-

In most of valve multiplayer games, there is a thing that is called Mouse acceleration. Desactivate that ****. becouse we want to have quick response on your enemy, even do, if you move the mouse very quickly, it will move more faster and causing you to loose control... so desactivate that crap.

Do not think that you can't. what i'm trying to say it is that you should not give up even if your team is losing 0-7. it may sound a little extreme but once you believe in yourself and try your best you can turn the score to your favor.

Teamspeaking is important. it doesn't matter if you're a kid, but do not spam things or say something that it's not important to your team. leave the rage to yourself and it will be ok.
teamspeaking will help you a lot, you will not be typing everytime or wasting your time reading and waiting for a response.

keep an eye in the ammo and health, you're not be the only one who get into a battle with low health or ammo. believe me. it's horrifying. so do ... not.. do not do th-at

keep an eye on enemy team. if you are trying to get some armor in competitive be careful, becouse weapons like the ak-47 will kill you 1 shot to the head, with or without the armor/helmet. so if you don't want to waste money, put at least, one eye to the enemy team.

HAVE FUN