The tripod allows for some movement, which is why it is popular with photography and road and land surveys.
The movement it allows is usually both sideways and up and down.
Especially with the camera the tripod is helpful in keeping it in place while taking shots.
This results in minimum camera movement, and getting stable images.
There is also the option of adjusting height of the tripod which allows the camera angle and height to be maintained.
Professional vs.
Amateur: Are you a professional level photographer or do you photograph out of hobby? If it is hobby that is prominent it is better to practice with your camera first, and then buy a tripod to get better shots.
However for a professional photographer the tripod is a tool to getting good shots.
Legs of the tripod: The tripod legs are essential to how well they can stand.
Check for the leg locks in a tripod so that they do not move unnecessarily.
See what type of bottom you want on the legs.
For most indoor shooting you can get legs with non slippery rubber.
However for outdoor and uncertain surface you should get the spiked bottom legs tripod.
The weight: Know from the salesperson how much the tripod will weigh, when folded.
Buy the most comfortable tripod that you can carry on your shoulders.
You may not have the flexibility of walking some distance for photography if the tripod is heavy.
The types: You can choose from pocket tripods to studio tripod.
Depending on what situations you need to use your camera the most you should buy the tripod.
You can get portable tripods for taking pictures while traveling.
You can get a medium size tripod for event photography and some outdoor photography.