I figured out how you can edit the Lesson Text fields in Ableton Live. I created an empty project which will hopefully demonstrate to you, too, how it works. Download the Ableton Live lesson text hack project to find out how to do it.
Feel free to share this with other Abletonians, for this is actually a useful feature if you want to share your projects and add a bit of personal info about yourself, write info for a collaborator, do an informative set for a workshop, create a tutorial, etc.
Happy text-hackin’…get crackin’!