I would like to start learning about symmetries in physics and how they affect physical quantities. As far as I know, the mathematical language that describes symmetries is the Group Theory. So, I think the best start would be getting deep in this theory. Although there are many books on that topic, I would like to find one that would be written in a very simple way, for beginners, with many examples, preferably in the physical context. Could anyone suggest such a book?
Note: I would like to study graphene and other 2D materials such as transition metal dichalcogenides.