dos santos on tripod

*Tripods can vary greatly in price depending on quality.
Most of the pros I know use high end Manfrotto (distributed by Bogen in the US).
It's really solid, and also all of the hardware is metal, no plastic parts that break off.
A good tripod will last 50 years.
Also keep in mind that the camera mounts for the tripod (or 'heads') are often sold separately from the actual tripod when you get in the higher end of things.
A good head could cost you hundreds just on its own.

Though, I suspect since this is your first tripod, you are not looking to spend that much.

If so, I recommend getting a tripod with greatest height possible.
Many brands will offer a small, medium, large option.
The price between them is not that significant, but the performance is.
Definitely go large.
I recommend something that can go close to 6 feet.
If you ever start shooting portraits, you'll really want that height.

As Elwell said, you are going to want something sturdy, and that's not likely unless you are willing spend some real bucks.
Instead, look for a tripod that has a little hook beneath the adjustable shaft.
This hook is for hanging weights.
If you hang a heavy paintbucket from that hook, it REALLY helps to keep the tripod in place.
An accidental tap with your foot won't move it and screw you all up.

They also sometimes have nets instead of hooks.
I prefer hooks.

Lastly, make sure your head has at least 3 tilt options.