So i just got a fatpack as a starting kit, its the 2015 Core so i can use the cards for some time befor transitioning. I managed to pull two decks together out of it.
The first is my more favored deck wich is a Blakc/White/Red deck which i built under the idea of a simple regiment: Have something heavy out there to rack up points and gain a good bais to keep my health up. With the Nightfire Giant as a key card in there i decided red was necessary. Also Red and Black just work together in my mind.
My secondary deck is a green blue deck with the basics of both archetypes. Mechanically that one is more of a heavy deck loaded with bigger creatures and lots of spells and instants to slowly knock down life points.
Hopefully this will work fine for friendly casual games so i can get better cards.