help

I bought solidworks about 5 months ago and still can't figure out how to use it.  I have a sldprt file that I would like to open and convert to a stl file.  When I do a search on how to do this it says to open the the file in solidworks and save it as an stl file.  When I search how to open the file it says click file.  however there is nothing that says file.  Can anyone help me find "file" in solidworks?