You have a juniper tree. Looks to be either Juniperus chinensis, or Juniperus procumbens. Both are closely related. These are easy bonsai to care for.
Firsts things first;
If that gravel is glued onto the soil surface, then you need to remove it. You cannot check for soil moisture if the gravel is in the way.
Watering should not be an everyday scheduled routine, but should only be done when the soil feels dry to the touch. Some people use their finger to test soil moisture, others use a chopstick. It is best to keep the soil moist, but not soggy wet. The soil should have good drainage, or else you'll be dealing with root rot. So a good drip tray of some sort is recommended.
I have three junipers and they stay outdoors therefore receiving real sunlight, and they can properly go dormant for the winter. As with most, if not all conifers, they thrive outdoors, but they can be grown indoors given the correct lighting conditions and moisture. If grown indoors, I would not place the tree near a heat vent, on top of a t.v., atop a fireplace, etc of any sort.