Have you ever wondered how to make, edit, or decide what is the best crosshair for you? Check out the following sources:
-- https://www.youtube.com/watch?v=TQoCVnnKV88 Is a video that describes his preference and opinions on crosshairs

-- If you know how crosshairs work, you can go straight to this website to build you own. Just copy the "Config" text, and paste it into console in CSGO:
http://tools.dathost.net/#alpha=255/color=5/color_b=50/color_r=50/color_g=250/dot=0/gap=0/size=84/style=4/usealpha=1/thickness=1.5/outline=0/outline_draw=0

-- And finally, my preferred method of getting a crosshair is through this workshop download: http://eo.steamhost.cc/steamcommunity_com/sharedfiles/filedetails/?id=308490450
This is a really easy way to get crosshair. After you subscribe to the workshop file, simply go to the "Play offline with bots" in CSGO and select "workshop files" then go the the map and you are good to go. If you have any questions about how to use it, simply ask!