Wow, my son just turned one on the 23rd. He only says: Mama, Dada and Papa. He can take a few steps but that is all. He usually falls down after 4 or 5 good steps. They will walk when they are ready I guess!! :) That's the best advice I have received so far.
Don't rush him, thats probably the best advice I can give you. They all walk & talk at different ages. It's totally up to them. Just because he doesn't say many words doesn't mean he is stupid or doesn't understand you when you talk to him. Give it time...He'll get it