The latest version of Firefox is out and everyone should download it now. Whether you use it as your main browser or not, it is a good backup to use in the event of Chrome or Safari having issues with a page. It has lots of technical improvements which you can read about here (if you want bored silly), but the real news is it is faster and better than before. To update your existing Firefox, click on the three horizontal line icon at the top right of the Firefox window and select 'Help' then 'About Firefox'. Keep doing this until it says it is version 58.0. Good luck....