Find out more about the basics, what types of graphs and diagrams there are and about the tools.
Here at IST Austria we provide and work with several programs. Find more information on Data Viz @ IST Austria.
Starting with the real basics like colour, font, size and emphasis. Go and check out the Basic Visual Grammar.
When it comes to choosing the type of graphic visualization, head over to Graphs, Charts, Tables and More.
There are various platforms, programs and tools to visualize your data. You can find a number of them under Tools.
For additional information, the Homepage of the Duke University also offers a great range of information (regarding tools, tutorials, examples, etc.) about data visualization.