It would ruin the show if Sokka suddenly learned to bend, at least for me. Maybe "Sokka's" isn't possessive, but a contration of "Sokka is" making the title "Sokka Is Master." LMAO!!!

Seriously though, it probably has something to do with training in combat or something. He's a warrior at heart and he'll probably develop those skills better with a master warrior to train with. Suki perhaps?????

Sokka will not become a bender, but he will learn about an inner strength that he has

Could Sokka's Master be his father since it has seemed like he has tryed to follow in his fathers foot steps since episode1 book1?mHis father could teach him strength and courage things that a real warrior can utilize.

I think that his master is probably going to be a warrior that will teach him the right ways to fight.?? Even though Sokka learned from Suki but he still does not understand many aspects on engagement.?? He loves to yell as he attacks which by definition is stupid because he is not trying stealth like attacks.?? Look at the Jet episode and when Jet and the freedom fighters took out the camp.?? Jet was swift in his attacks and kept moving.?? Sokka just does a frontal assault and that tends to be his downfall.