Coinciding with the launch of MariaDB 10.0.14, there are also two new MariaDB books out:
https://mariadb.com/kb/en/mariadb/books/

• MariaDB High Performance by Pierre Mavro, September 2014
  • For system administrators/architects or DBAs with existing MariaDB knowledge who want to learn more about how to grow their current infrastructure to support larger traffic.

• Mastering MariaDB by Federico Razzoli, September 2014
  • Aimed at intermediate users who want to learn how to administrate a MariaDB server or a set of servers.