Any Mathematician who can advise? Looking for advanced Geometry course

[RainbowLife]

Does anyone know how it's possible to study geometry beyond the basics?

I'd really like to delve into it a bit further and feel I need some guidance. I could probably manage textbook study but would much rather find something taught. It's just for interest.

I studied a few OU postgrad pure modules many years ago (eg formal logic) but I'm not capable of reading anything really complex without some help.

In this Internet age I feel sure the information is out there 😊

At which educational level have you already studied Maths, OP?

What do you mean by the basics?
I did my undergrad in maths with the OU and they have a level 3 (or did) groups and geometry course that covered non Euclidean etc.

if you want a thorough treatment of Euclidean geometry there’s always Euclid himself which is published in various editions.

if you mean functions and analysis sort of level of geometry - turning points and differentiability etc then you’re more in the analytic geometry area.

Coursera and EdX, then of course the Khan Academy.

Thank you so much for the suggestions @Octavia64 and @oberuber. I thought my question had sunk without trace, apologies for not replying. A good idea to look at Euclid to start with

I have studied some masters level pure courses @TheSquareMile

I'd really like to understand tilings and knots. I stopped studying when DS was born part way through OU MSc.