This is the place to start, to learn basic skills.

This isn't a course, this is just a collection of my sketches

This course shows how you can use iPad apps for urban sketching. I know a lot of people don't like the idea that you can take a photograph of the trace over it, but there are other reasons for using your iPad. For example you can connect CAD programs to portfolio and import the 3-D model to trace over, you can use your iPad apps to trace over people to practice sketching people and animals.