Crawling to walking

My son started crawling a month or so ago. This week he has been climbing up everything! He isn't cruising really, just pulls up and then cocks a leg to climb up. Has managed to climb up the sofa, our very high bed, up the tv stand which I am mortified about as one min he was sat by me with toys then next he was on the tv stand.

Anyway, what's the signs he is going to try and walk? I know crawling signs are getting onto all fours and rocking but I don't know walking signs. When standing he is constantly on his tip toes as he just wants to climb. That's all he wants to do!