How do you move the new tab button in Firefox to the left?
This question comes up for me every time I have reinstall Windows and Firefox, so I have decided while finding the answer to also post it on my blog.
First off you should have the Firefox add-on Tab Mix Plus, which you can download here: https://addons.mozilla.org/en-US/firefox/addon/tab-mix-plus/
Once you have installed the add-on and restarted Firefox, go to the "Tools" on the Firefox Menu and "Tab Mix Plus Options". At the top of the new little pop-up window select "Display" and the "Tab Bar" tab. Check "New Tab Button" and select "On the left side" from the drop-down menu.