Sourdough starter issues
I would suggest you to keep feeding the starter a few more days before starting the 'discard and feed'. Fermentation is a process that requires a LOT of patience, as everything else in baking.

On the other hand I tried and could successfully make a starter following these instructions. I love The Kitchn and Emma Christensen. Her baking tutorials are among the best.

http://www.thekitchn.com/how-to-make-your-own-sourdough-starter-cooking-lessons-from-the-kitchn-47337