Welcome to sherdog. Did you check the FAQ? If so you would've found this:
Protein Powder Primer
Get a plain whey protein for post workout, and add your carbs to it separately. You'll save money and know exactly what mix you have (ie: 2:1 carbs:protein).
Concerning the greens supplement, I'm not sure. Greens+ is the most common recommended greens product around here. Make sure you are getting a lot of veges first (preferrably with every meal as stated in this thread:
The Principle Behind a Complete Meal (Veggies At Every Feeding)), then supplement with a powder when you don't have the time and/or can't be bothered eating whole foods.
Good luck.