O'Reilly have their annual 50% membership sale.
"Continuously build your skills with O’Reilly. Whether you want to quickly solve a problem, master a new skill, or build expertise in the mission-critical topics you need for career advancement, O’Reilly helps you future-proof your career.
- Build career-advancing skills with live online training courses and on-demand learning.
- Explore topics from Python to data science to management and leadership.
- Learn the way you learn best—through books, videos, interactive tutorials, or live online classes.
This offer is non-transferable and expires on July 24, 2018 at 11:59pm Pacific. This offer is for new individual memberships only. Team (multi-user) or enterprise accounts are not eligible."
(Note that you get access through ACM membership, which ends up being cheaper, especially if you're a student: https://www.acm.org/membership/membership-options)
I just want to look at the cover illustrations.