I'm a pretty new player, and would like to (if possible) resurrect this thread to gain some insight into deckbuilding in 2016. The previously posted links to wizards.com no longer work, so if anyone has any pages to share, I'd love to learn more.
For my fellow newbies, I'll contribute three (outdated but helpful) sections of a deckbuilding guide from MTGSalvation:
Part 1
http://www.mtgsalvation.com/articles/18
g-part-one
Part 2
http://www.mtgsalvation.com/articles/18
g-part-two
Part 3
http://www.mtgsalvation.com/articles/18
part-three
Cheers!