Hi, welcome to MusicBrainz.
There absolutely is a way to add it. if you start from the How To category, you should be able to find all the information you need on creating an account, adding a release(that is, a specific edition of an album), adhering to style guidelines and so on.
A word of warning: it's kinda addicting.
See especially how to duplicate a release, which will reuse the track names and recordings from an existing edition, eliminating a lot of manual entry.