Open Data Day 2016 will take place on 5 March 2016. This Saturday, around 200 cities will participate by organising hackathons and other Open Data related events. Are you planning to participate during one of those events? We have a few interesting sources you can start looking into.
The European Data Portal offers material to increase your Open Data knowledge. Do you want to learn more about the basics of Open Data first? Go to the eLearning modules. The portal currently harvests over 415,000 datasets you can use as an additional source to build of your application. The datasets can be searched either by using normal search terms, or by using the SPARQL manager.