PebbleU is a Kindle-like interface where you can annotate, add notes, and perform intelligence searches through content.

When you purchase a PDF, you have the option to add a PebbleU subscription.

why subscribe?

These PDFs come with a PebbleU subscription

$129.95
Original price was: $249.95.Current price is: $99.99.
Original price was: $599.95.Current price is: $179.99.
Original price was: $749.95.Current price is: $119.99.
Original price was: $839.50.Current price is: $349.95.