Definitely clean it via ultrasonic first and most importantly, catalog it, listen to it in full, and write down my impressions of it in the catalog, about the sound quality, pressing quality and music quality. With over 2k vinyl, it is a critical aspect of what to choose to play next.
What is the first thing you do when you unwrap a new vinyl record?
That is, apart from kiss the person who gave it to you!
You might play it, catalog it, archive it, clean it or simply store it. I am sure there are many other things you do!