He's Smarter Than I Think...

The little guy turns 1 on Sat.
Crazzzzzy!
He is walking (as long as he wants to do it and we don't try to get him to), clapping, pointing, teething, eating, sleeping, playing, dancing, all the normal things for a 1 year old, right? I don't know. This is my first.
He is also very smart and learning to tell us things through motions, mainly pointing. I am not totally sure when or where he picked it up, but every time I get him out of his crib now he immediately points to the light switch (he likes to turn the light off) then points out the door, then to another room he might want to go into, or sometimes down the stairs. Then either into the living room (this morning first thing he wanted to do was read, so he took me straight to the books, picked one out and sat down with daddy while I got some breakfast ready!) or the kitchen if he is hungry. It's a fun game, I just don't want it to get out of hand, as in a demanding sort of way!
So the smart part. He starts to climb the stairs. I go get him and say we are not going upstairs now. He starts to fuss and then gets as close to a temper tantrum as I have seen him get, which is to cry and then lay down on the floor and continue crying as I walk away and let him deal. This is what he did today when I did not take him upstairs. He eventually (still crying) made his way back to me, held up his arms (for me to pick him up) and then started pointing to the stairs again. I told him if we went upstairs then he was going to take a nap. I really didn't think he was ready since he already took one 3-hour nap and had only been awake less than 2 hours at this point...but he kept pointing, so I obliged. I took him upstairs and he immediately put his head down on my shoulder. I put him in the crib and he grabbed his blanket and I haven't heard from him since...guess he knew what he needed more than me! I just need to listen better (and sooner) next time so we don't have to go through the tantrum stage...