The Little Book of Synology DSM

Readable and clear - most useful.

Excellent guide book

Bought his to set up a 215+ which all proved quite painless. The difficulty here is that Synology continuously update their DSM and the book can soon go out of date. A 220+ should arrive soon and hopefully the latest reprint will update to the latest version of the DSM. We'll see, but it's the book Synology should have included with every DiskStation.