May be Bob guessed it correctly that your daughter is going to high school but you didn't say it in the post explicitly.
Its not completely true that content is not available at all. I worked in an institute that had subscription to electronic resources and a lot of content was available in electronic form. If its an university student studying science then all scientific publications are available in pdf format.
I am scientist myself and also looking for an ebook reader to read scientific articles during travel and inclining more towards Kindle. Only thing that is still not very clear to me is, how easy it is to transfer these scientific publications on Kindle and if they are good at displaying images (I have read that they are not but haven't seen the performance myself.) Hence, I plan to visit the retailers selling these devices and get a demo.
Meanwhile, you could check http://www.mobileread.com/forums/ for more details. Almost everyone there owns one and can give their opinions.
For a high school student, go with Bob's advice.
I want to buy my daughter an eBook reader but with so many options now its hard to chose.
The idea is to use it for all the books required by her high school.
Please give me your opinions.