Hi Sage.
Welcome to our Mattress Forum! 
I am happy you’ve been doing some preliminary research which is the best way to ensure that you get a mattress that is durable, suitable and fits all other parts of yourpersonal value equation. As far as the “green button” … there is a video link in post #1 here which also outlines options for getting assistance in case you need it. You can start a new topic any time in our Expert Member forums organized by area of expertise. Additionally, you can also append (as you did) your comment/question to any existing topic that closely matches your topic of interest (preferably a topic that is not active with other discussions in progress)
We look forward to your comments or questions.
Phoenix