Not sure about the species, but have a read through the learning forum and the informational part of [url=https://www.helpfulgardener.com/bonsai/]helpfulgardener.com[/url] - it provides a wealth of information
If you just got it though, basically put it in its spot (usually as bright as possible, maybe even add some artificial light - check the thread on lighting) and leave it there for a few weeks before you even think about potting or trimming... Don't forget to water properly.
When the tree feels at home, it will let you know by sprouting new growth.
From then on, you can start planning and working with your tree.
