Got a "nexus 7" root help. And will android l come on nexus 7 2012

[Slashyou]

Okay so I got a Asus nexus 7 32GB 2012 version on eBay.
And it had a loose micro usb.
And I wanna root it and install slimkat.
And what is the best way to root it??

BTW it runs 4.4.4 KitKat.

Another question. I know that its impossible to answer but here it is.do you think the nexus 7 2012 get android L from Google?

Thanks for reading ☺