In this chapter, we've dipped our toes into the Processing Toolbox in QGIS. We asked questions about our data. We used simple GIS processes and tools in QGIS to derive answers from our data. The power of GIS lies in its data. We also looked at both vector- and raster-based queries.
In the next chapter, we'll look at extending this by using the model builder to chain common processing tools together, before looking at Plugins and the Python Console.