Question: first things to do after installing ubuntu mate?
Answer: Check and Install Package Updates. The first step is to check and install updates to keep your computer's software up to date. ... 
Set Up Livepatch. ... 
Opt-in/Opt-out from Problem Reporting. ... 
Sign in to Snap Store. ... 
Connect to Online Accounts. ... 
Set Up a Mail Client. ... 
Install Your Favorite Browser. ... 
Install VLC Media Player.