If you are a student on Moodle, here's a quick overview of the changes you can expect to see when your Moodle site is using Moodle 3.4:
Private files storage display
When uploading files to your Private files, you now see how much space you have used, helping you to better manage your storage limit.
Improved Global search
If Global search is enabled, it's now possible to search blocks and courses you are not enrolled in.
'Previous' and 'Next' links, along with a jump-to menu make navigating around courses easier and more intuitive.
Moodle from your Mobile!
Links in the footer and user profiles now encourage you to download and use the Moodle Mobile app.