Purity, please help a noob

[Agalloch]

Hello all, can someone spare 5 minutes and explain the concept of purity? I play for like 2 weeks and never had an item that's higher than 0 purity

[Kralith]

"Purity affects only a few items in the game right now...."

First take a look to the wiki: http://salemwiki.info/index.php/Purity
There are a full description of for what Purity is needed and how do you get purity items.

Then come back an ask if you don't understand something.