I have read every book on Postgres, they are literaly all crap, boring, tedious and simplistic. On contrast, the on-line docs on the postgres web site, are superb, matching the very high quality of Postgres itself. It is possible to write interesting books with personality even for a dry topic such as Sql eg Itzik Ben-Gan for sql server for general sql Joe Celko opinionated but entertaining, Stephane Faroult one if the best ever sql books "The Art of SQL" , Use the Index luke is great - even Chris Date's academicy books are more interesting than any single postgres book which is a shame since Postgres is truly amazing application.