http://www.jonaseinarsson.se/fractal-curves/
(Not mobile friendly, sorry)
A good start is http://www.fractalcurves.com/Root9Square.html
Try to recreate some things from the fractal bestiary, and see how sensitive the end result is to the generator.. I use pretty much the same notation as he describes here http://www.fractalcurves.com/Turtle.html
http://www.brainfillingcurves.com/images/picture.png
edit:
https://turtleacademy.com/view/programs/5874b880f45859ae6a3c...
http://www.jonaseinarsson.se/fractal-curves/
(Not mobile friendly, sorry)
A good start is http://www.fractalcurves.com/Root9Square.html
Try to recreate some things from the fractal bestiary, and see how sensitive the end result is to the generator.. I use pretty much the same notation as he describes here http://www.fractalcurves.com/Turtle.html