Merhaba!

I had a question regarding two verb sentences in Turkish. I have been practicing writing sentences like "Türkçe öğrenmek başlıyorum" (I am beginning to learn Turkish). Literally, it is "Turkish to learn I am beginning". But last night, I sent a friend of mine a note saying "Sen kazanmak biliyorsun" (You can win). He said the correct way to say it is "Sen kazanabilirsin". Any and all help is appreciated! Teşekkür!