Your first step should be a good book with plenty of information about what to look for when you are choosing a tree and a pot, lots of clear pictures, and some basic instruction on potting, pruning, fertilizing, shaping, and general Bonsai care. Almost any tree or shrub, and many kinds of flowering plants can be Bonsai. Ideally, the leaves of a Bonsai tree should be small, in proportion to the size of the tree. But if the roots are pruned, the plant is potted in a container that limits root growth, and the leaves and branches can be pruned, then you have a Bonsai plant, although it may not be a traditional variety. The answer to this question depends on the kind of tree you have.
Some trees require full sun, some like low light, some do best with bright indirect light.
Also, many popular varieties of Bonsai are outdoor plants and will not thrive indoors, no matter where you keep them. Our staff will help you choose a plant that is appropriate for your desired location. Some varieties need constantly wet soil, others thrive when the soil is allowed to get somewhat dry before watering. If the tap water you are using is chlorinated, please allow it to sit in an open container for 48 hours before using it to water your Bonsai. This time allows the chemicals to evaporate, so they will not damage the delicate roots of your tree.