Zettelkasten 1

I am thinking of starking a zettelkasten. The purpose of the zettelkasten would just to link mathematics definitions from various topics for my personal use. Of course, anyone else would be free to use it as well. I think, perhaps, I would link it a seperate webpage with a different theme. I need to look up more on how to set it up. A collegue of mine has it set up with a graph which would be nice. More on this endeavor later.