How do you make money off of Dogecoin?

Can you elaborate on the various ways one can profit from investing in Dogecoin? Are there specific strategies or trends to be aware of? How does the market value of Dogecoin affect potential earnings, and what role does speculation play in this process? Is it feasible for an individual to make a substantial income solely through trading Dogecoin, or is it typically seen as a supplementary source of revenue?