Tips for CS GO

Personally, my biggest tips for you:
A). Practice. Practice will give you a full feel of playing the game and will help you learn through experience as well as trial & error.
B). Look up some videos on YouTube. Videos such as good smoke spots, flash areas, etc.
C). There is a video somewhere on YouTube for adjusting your sensitivity to the best setting for you. Having a comfortable sensitive is a huge factor in your gameplay and could make a difference between a win and a loss.
^ In addition, adjust your crosshair to your liking by using some of the available crosshair maps on the Community Workshop.