Do you know anyone who practices Veganism? Vegans maintain a diet that abstains from animal products.
I don't know anyone that practice veganism, at least that I know of.  But I know some Vegetarians.  Do you know what is the difference?
I dont actually. My friend became a vegan so I have been studying up on that. There are actually several different types of vegans.
Oh, I think I remember, Vegetarians cannot eat meal products, but they can use them like leather, I think.
That is what I gather but did not want to spread false information. A dietary vegan wont eat eggs or even dairy products. 
Yes, that must be difficult.  I think maybe some day I will become vegetarian, but I will keep eating dairy and eggs.
In veganism some consider themselves "ethical vegans". Where they follow the diet but also oppose the use of animals for any purpose whatsoever.