i want to start watching this show but im kind of reluctant.
I see that the reviews are great but what is it about? is it a kid show or what?
Nah, it's not. Not specifically. The Doctor can be rather childish at times, so it can feel that way.
Edit: the show is basically this.
There's this dude who's lived for 2000+ years. He has a time machine that can go anywhere and anywhen. So he does. A great amount of time, out of boredom.
But a lot of the time, it's to fix problems he comes across. Sometimes small, sometimes on a universal scale.
Because he has no one like him, he gets lonely. So he brings along people that interest him. Sometimes (like this one), it's only to remind him that he's a good person. He can be very... detatched and wraithful, and will bring down whole civilizations and destroy planets if you push him too far. Despite this, he's really a pacifist and will out think a problem
And because he's been doing this a very long time and has made a lot of enemies (from gangsters to other races to HP Lovecraft-like monsters from outside the universe), sometimes he dies. Imagine if James Bond movies sometimes ended with him being killed and changing into the next dude to play James Bond.
It's sort of like... reed richards+dr. doom+indiana jones. In a time machine.
And one more thing. There isn't any "Doctor Who". He's "The Doctor".