Hiyas all!!! Happy Holidays!!

I am new to the "train thing" and was wondering if you all could help me out a little bit. I have just become the owner of an assortment of Bachmann trains and accessories. I am not into trains all that much and do not know alot about them. Considering listing this lot on an auction site. There is an assortment of tracks, signs and posts as well as a freight station. Also 15 cars some of which are engines. PLEASE HELP!!! Thank you!!