Making some assumptions, here's my advice: the moss is probably fake- remove it either way, the rocks may be glued on, remove them either way, inspect the soil- if it's a peat-based soil, it should be changed. The moss and rocks and typical soil stores plant these plants in will help to hold moisture in, and that's not what you want. Jades hail from southern Africa where they get lots of sunny, dry weather. The roots don't do well in soil that holds on to a lot of moisture. With the rocks and moss gone, don't water until the soil is completely dry. You can even wait until you see the leaves start to flatten, crinkle, and get softer, more pliable. Then water thoroughly three times, about five minutes apart, until water is running freely out of the drainage hole. You can plan for a repot into more of a gritty mix with no or little peat-based soil next Spring if you want to, though many do grow jades in potting soil. The easiest way to kill jade plants is with water, so you just have to be careful.

Next is light- lots of it, or the branches will get etiolated. A south facing window, or even grow lights. During warm weather, it would much rather be outside.

Fertilize with something easy to find,, and follow package directions. Succulents generally get half what other tropical plants get.

Some sources for care info: bonsaiempire, bonsaimary, bonsai4me. Good luck!

ez

I agree with what ez said. If you can post a pic it is easier for many to comment. Jade snap easily so you have to sort of learn how to wire it. It is a lot easier with the clip and grow method. You can look at this thread to get going with some ideas on shaping/pruning. They are easy to take care of as long as they do not get over watered and receive bright light.