Counter Strike: Global Offensive Competitive matches

In CSGO there are competitive matches which are 5 on 5 and casual 10 on 10. I like 5 on 5 more because you can meet really cool people and it just has more intense which most CSGO players live for *cough* me *cough*. These matches are a lot more fun (to me) than casual because when it's just you and there are 3 other players it's really satisfying to win that round. Now there are 4 maps I play on Nuke, Dust II, Inferno, and Mirage. These maps are played on by most people so therefore you can find a match faster. These matches have rounds and each match has 30 rounds so you need 16 to win and both teams need 15 to tie. The matches can be up to 90 min long which is actually really long but in lower ranks one team usually destroys the other team. On the first round of a competitive match you start with a sidearm depending on team. Terrorists get Glock-18's and the Counter-Terrorists get a choice of a p2000 or a USP-S. On these rounds you should buy armor not another pistol because you will most likely lose the pistol you bought if you don't use armor.