Mythic Flipping

So I just sold a mythic I found a bit ago and now I've heard that mythic flipping is a good way to make money but A. I don't know if that's true and B. I don't know what mythics are good tom try to flip? So ya I was wondering if anyone has the answers to my questions xD

 

MMMMM idk

 

The heck is "flipping"?

 

…uhm like house flipping? did I not spell that right? Sorry if I didn't English isn't my first language (my first language was "stupid" if you were wondering)

 

Yes, its the best way to make money imo but is also one of the hardest.
You basically have three options:
Buy a mythic for less than it's worth and resell for more
Buy a mythic and reroll, sell for more (hopefully)
Research upcoming nerfs/buffs, or predict which are going to be buffed by either reading a lot of stuff about which ones need buffs etc/find weaknesses that need buffs, and suggest or hope they come through. Then buy the ones that will be buffed and sell for more after buff.