Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
First i want to said: If You read this chapter, You don't be pro, but i think it will be halpfull to do this.
Second im not pro player.
And the last one: i play couse i like it and its fun for me.
Items always are the most imprortant thinkk in Yours game. As i write, first i buy Doran Blade, second Berserker's Greaves, third item is Vampiric scepter but its not importat what u buy first: Blood Thirster or Black Cleaver ( i prefer Black Cleaver couse it's aditional AS) than Phantom Dancer ( it is very halpfull if u need to escape from "gang") and infinity Edge - but what when it's isn't end of game and u got to much gold? Sale Doran Blade and buy somethink what help u play against Yours oponent, or somethink to incress Yours HP: Frozen Mallet or Warmog's Armor ( first give u HP and slow - incress Your chance to kill escaping enemy, but Warmog give u more HP and regeneration), after that i sell Berserkers Graves and buy second Phantom Dancer - yes i'm slower but AS is somethink like 2.0, after that i buy elixirs.
U MUST REMEMBER: You got one of the best range, and it's your main attribute.
Before u play normal games go costum to learn about Your skills, couse it's can change everythink. Q - skill got very good range, and demage, W - skill is use wery seldom, couse trap is easy to spot, but u can grass, E - skill is important, not because it slow enemy, but it move u back and u can move through some wall, and help when u need to escape. R - skill is useing to KS or finish a enemy. It got very large range but can be blocked. When u play mid, and u know your ally died fighting with oponent go to help him, even u late u can use R - skill. U must remembet than you are Caitlyn, and opponent focused u, than stay behind all ally. U got much DMG and range and AS.
I believe i help somebody, and i apologize: because im not to good in english, and i know there are much mistakes, sorry