Step 2: Clear out room/area
You may not want to schlep all the stuff in your room out of it, but you should try your best to clear/empty out the room/area you're working in as much as possible. If you have plenty of space along the perimeter by putting everything in the middle of the room and covering it with a tarp, that's fine, but for small rooms or those with a lot of stuff, clearing them out (either partially or completely) works best.
You really don't want to be tripping over things while you're dealing with paint. Paint isn't particularly hard to work with, but you would be amazed at how easily you can get it places you didn't intend to. Keeping that in mind, you should try to make plans so that the furrier and smaller members of your household are not going to get into mischief while you work.