It's not to late to learn tag mechanics but in general I wouldn't even do those inputs on the combo challenges. It's just utterly ridiculous. I'd rather formulate my own combos and juggles.
Helena's PL is... Idk.. Like weird. She does all that twisty stuf lol. It looks funny though, like how Busa players claim they don't back up and rape the niñpo stance thingy all day XD
I really suck at those. Not used to doing tag shit at all