Another book (!) by Eric Broug - 'Islamic Geometric Patterns' that has step-by-step instructions for 22 patterns.
In general, I use a good compass (although I have also used the cheapest one, it's fine for getting something on paper!) and a mechanical pencil. A transparent ruler with a bevel (so that you can flip it over and draw along the edge) is good. You get used to how to precisely draw a line between points and how to adjust a drawing to get it as symmetric as possible.
The two practical ones are Arabic Geometrical Pattern and Design by J. Bourgoin (a pattern book), and Ruler and Compass by Andrew Sutton, which is a small general guide to building shapes.
I've never gotten particularly far in doing my own and have honestly spent more time just cheerfully leafing through Islamic Art in Cairo by Prisse d'Avennes and L'Art de L'Islam by Titus Bruckhardt.
Samira Mian, her youtube channel is: https://www.youtube.com/user/samiramian
Another book (!) by Eric Broug - 'Islamic Geometric Patterns' that has step-by-step instructions for 22 patterns.
In general, I use a good compass (although I have also used the cheapest one, it's fine for getting something on paper!) and a mechanical pencil. A transparent ruler with a bevel (so that you can flip it over and draw along the edge) is good. You get used to how to precisely draw a line between points and how to adjust a drawing to get it as symmetric as possible.
Go for it! It's fun :)