What Is Training Grounds?

Dear fellow summoners, esteemed Kabam Moderators, Administrators, people of the contest,
My mother took my phone. As a result, I am unable to sign on to Marvel Contest of Champions. I've heard some buzz about training grounds, and about the no power glitch. So, what is training grounds? What's it like? Enlighten me please, I would appreciate it as much as pulling a six star Torch.
My mother took my phone. As a result, I am unable to sign on to Marvel Contest of Champions. I've heard some buzz about training grounds, and about the no power glitch. So, what is training grounds? What's it like? Enlighten me please, I would appreciate it as much as pulling a six star Torch.
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Comments
It would tell you how to do it, then would ask you to try it.
Then it asked you to try it three times in a row.
Neither of the champs gained power for the duration of the tutorial until the end (hence where the bug came from). Once you did the parrying 3 times you got a special 3 to end the fight and you were done.
No rewards or anything. Just teaching Parry with more lessons to come for new players I'm sure.
Everyone tried it because when you went to the fight screen, on the far bottom right it had O.G. Captain America pointing at you with a dialogue box stating to get in the Training Grounds or something similar.