Port Forwarding

What a great forum, this forum has helped me build exactly what I truly want and i truly hate to bother all the knowledgeable techs here, but i am in need for some help and what a better place to come to and the advise has been unbelievable. I am about to build my first PC for my daughter and...

I've already got a desktop PC, and at the current state it just looks trash.. the Case is from 2003, i've upgraded a few parts but still need to get a New CPU + More Ram, I'm thinking of getting the i7 2600k but i don't know which motherboard would fit it, i'd prefer one that supports ddr4 Ram...