Juniper Networks

Junos Cookbook (Cookbooks (O'Reilly))
$54.99
This book is a must-have for newcomers to JUNOS. It does not try to explain the theory behind the features being configured, but if you already know how to set up other kinds of routers and simply want to know how to do the same thing on JUNOS, this is the right book to have. The focus on examples versus tutorial information works well, but there is still enough background material to help understand JUNOS-specific features "by accident."

ScreenOS Cookbook
$54.99
Things are not always explained so clearly in Juniper's Concepts and Examples documentation. This book gives you a really brief intro to the topic and dives in giving examples. Suprisingly, those brief intros have filled in a lot of the gaps or confusing parts of the Juniper docs.

This is a good book if you know Juniper well but can't remember every aspect or command or niche to ScreenOS.

Not sure it's a good intro to ScreenOS book.

Juniper Networks Secure Access SSL VPN Configuration Guide
$59.95
This is an excellent book. It provides a lot of helpful information on how to set up a Juniper SA appliance. The information in this book has helped us organize the user and resource profiles in our installation, as well as set up remote access to Citrix applications. I recommend this book to anyone setting up or administering a Juniper Secure Access SSL VPN.

JNCIA: Juniper Networks Certified Internet Associate Study Guide
$49.99
This is an excellent book and a good prep resource for the current JNCIA exam. Note that the PDF of this book is available free on the website.