...
- SPARQL Tutorial
- Getting Started with SPARQL
- For understanding SPARQL, it also helps to understand how it is related to SQL, the query language for relational databases: http://www.cambridgesemantics.com/semantic-university/sparql-vs-sql-int
- Rich export SPARQL queries
Learning Sparql is an excellent O'Reilly book. The book's web site has examples, video and other resources for those learning SPARQL.
...