Warning: you do not need to spend too much time on each part of this sub-section
You do not need to memorize or learn by heart all the examples in the following pages. They are given as references. There will be no quizzes about curves as they are not often done "by hand", but are generated by tools such as Adobe Illustrator or online generators.
You need to draw arcs? Then, please use the corresponding section as a reference: you know you will find one or more examples and a detailed explanation.
You need to draw lines? Arrows? Curves? Same thing: go to the corresponding pages and look at the examples!
Also, do not forget to use your favorite HTML5 canvas cheatsheet (provided before in the last section). You will find it very helpful when you start playing with the canvas.