Potty training.

Zian • 22/Married💍/1 Son💙/Due November with a baby girl💖

My son is 15 months old today. And I saw him take his diaper off for the first time. Is it time to start potty training him? And how do I go about potty training him. He is my first child so I'm kind of clueless. He has been walking since 9 months old. Also he still only do baby talk so how would he be able to let me know if he have to go potty? TIA.