I have a Kobo ereader (Kobo H2O). I’ve been using it to make annotations but by default it only allows you to export the annotations to Facebook (eeek!). I found a wonderful posting that described how to export to a text file. Whoot! Here if you need it.
Thank you for that tip. Will definitely try this. Just bought a kobo for the first time, made notes and was feeling stranded till I saw your tip.