Web 3.0, starting point for technical person

After understanding what is Web 3.0 for any technical resource the next question is what to do next?  I would suggest to start understanding the following technologies.  I have listed most of the technologies being used (some in nascent stage)  hence go ahead and start learning these:

• RDF: (Resource Description Framework) RDF is the grammar used by the web.

• OWL:  (The Web Ontology Language) Grammar + Expression + Logic
• SWRL:  (Semantic Web Rule Language) Rules to the web language
• SPARQL :  Things like contact are described in microformats which can be done by using SPARQL (Protocol and RDF Query Language)
• XRI (Extensible Resource Identifier) is the new URI
• XDI (XRI Data Interchange) Standard for sharing, linking and synchronizing
• XFN:  (XHTML Friends Network )  HTML microformat that provides a simple way  to represent human relationships  using links.
• API:  (Application Programming Interface) Way to access data everywhere
• OAUTH: Open standard for authentication the API

(Please let me know if I have missed any?)