Reading a book is great (and reading this book is even greater), but continuous learning is the only way to keep up to date with MongoDB. In the following sections, we will highlight the places that you should go for updates and development/operational references.
Reference documentation
MongoDB documentation
The 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 the features that are coming up next: https://jira.mongodb.org/browse/SERVER/.
