How do i use custom crosshairs?

Yes, i'm a scrub who just made an account do download hacks. I've been using mpgh for a little over a year tho and i can say i enjoy seeing every new upload.

My question is however, how do i use the custom crosshairs? I've download 2 or 3 different rars from forums recently made and there's no *How to* part of the thread.

Any and every response is welcomed, thanks for the help.

Getting a custom crosshair is easy you can either use your config file which is located at \Steam\steamapps\common\Counter-Strike Global Offensive\csgo\cfg if you didn't know already, or the console which is easier but ill teach you both ways.
The console way is easy simply open the console with whatever button you have it attached to, type in commands like "cl_crosshaircolor" which will control the color of your crosshair but you have to use color codes to modify it or just simply the number from 1-5, more commands like "cl_crosshairalpha" and "cl_crosshairsize" control the visibility of the crosshair and the size there are more of these which you can search for your self just remember every command connected with crosshair starts with cl_.
A config has many things you can change in the game but you asked for crosshairs which i will explain.
I suggest starting with already done configs if you don't already know how to modify one search for one online but you can also make your own crosshair within the config here is an example of how you should put it. ( a bit more complicated than the console version)

cl_crosshairstyle "1" // def. 0 - Crosshairstyle
// 0=Default -Crosshair is completely dynamic.
// 1=Default Static -Crosshair is completely static.

cl_fixedcrosshairgap "3" // def. 3 - Center gap between Crosshair lines
// Also accepts negative Values like -1 / -2 / -3 etc.
// This option works only with cl_crosshairstyle 1!

cl_crosshaircolor "1" // def. 1 - 1=Green 2=Yellow 3=Blue 4=LightBlue

Use any method you feel comfortable with.