Just google "sparql tutorial" and you should find a bunch. I was going to just include a couple of URLs but there are several tutorials so I thought better to have you google it and you can pick the tutorial you like best. When in doubt go with the Apache tutorial, their stuff is usually good. There is also a good book published by
O'Reilly: Learning SPARQL Querying and Updating with SPARQL Bob DuCharme Although, it's fairly dated now and may not have the most recent improvements, at least my version is dated, there may be more up to date versions.
BTW. keep in mind SPARQL is primarily for the layer below OWL called RDF. I think there are a few of the best SPARQL implementations that include support for OWL semantics but I don't know for sure as I don't use it much.