Play Ranked Matches to earn coins to buy Weapons & Weapon attachments. If you play custom matches you don't earn coins. Personally, my favorite rifle is the Charbtek-28, I do very well with it and it is very effective both long and medium range. Just About everyone else's favorite gun is the Compakt-665, which is very effective in short range situations, not so much long though. So it really depends on your playing style. Also remember that in the Options tab in the menu, if you go to Settings and HUD controls you can change the placement of all of your on screen buttons, which should help any trouble you're having. Hope this helps.