There is https://svgbattle.andyfx.net https://svgbattle.andyfx.net It has interactive editor, and introduces the available commands/shapes. Its not really a g

There is https://svgbattle.andyfx.net https://svgbattle.andyfx.net It has interactive editor, and introduces the available commands/shapes. Its not really a guide but it has links to relevant parts of svg specification which honestly has pretty decent images and such for understanding the commands.