How to actually read ebooks?
Solution 1:
You can store your books on Dropbox.
Solution 2:
I think that Evernote has capabilities close to your needs.
Solution 3:
After struggling with the ebook thing for a few years now, I've given up and just print out as necessary. Ebooks just aren't there yet compared to paper.
Solution 4:
I've been reading books on my iPhone. There's some nice apps for that. I can't interact with them (other than leaving bookmarks), but I've found I prefer technical books on paper.