Reading a book is great, reading this book is even greater, but continuous learning is the only way to keep up to date with MongoDB. These are the places you should go for updates and development/operational reference.
Reference documentation
MongoDB documentation
Online documentation available at: https://docs.mongodb.com/manual/ is the starting point for every developer, new or seasoned.
The JIRA tracker is a great place to take a look at fixed bugs and features coming up next: https://jira.mongodb.org/browse/SERVER/.
Packt references
Some other great books on MongoDB are:
- MongoDB for Java developers, by Francesco Marchioni
- MongoDB Data Modeling, by Wilson da Rocha França
- Any book by Kristina Chodorow
Further reading
The MongoDB user group (https://groups.google.com/forum/#!forum/mongodb-user) has a great archive of user questions about features, and long-standing bugs. It's a place to go when something doesn't work as expected.
Online forums (Stack Overflow, reddit, among others) are always a source of knowledge with the trap that something may have been posted a few years ago and may not apply anymore. Always check before trying.
And finally, MongoDB university is a great place to keep your skills up to date and learn about the latest features and additions: https://university.mongodb.com/.
