Just buy a headset, please? lol
And play with KB&M.. please.
I'm gonna try and get better though to partake in a few local LANs and also for MLG Columbus. I really wanna see how good I can get when I actually put in the effort to play DM for 10 minutes before hoping onto competitive, how good I can get when I actually bother to practice the Spray control for my weapons, when I actually bother to learn maps that aren't Dust II/Cache/Mirage, etc. Actually practice my aim by playing community maps. Actually listen to the game and play with sounds and try and hear key noises.
And play with KB&M.. please.