Although its one of the top used applications Adobe’s Reader is quite a sluggish and heavy application, and it takes ages to open up a PDF! I’ve always tried to look for something simpler and quicker to open PDF’s in a breeze and load my computer less. I think I finally found it!
Sumatra PDF is a free PDF reader which is really slim, light and open-source. This freeware has a very minimalistic design, and mainly concentrates on it’s simplicity rather than adding tons of features that are not commonly used, yet serves the basic purpose of allowing users read PDF documents. You can take a look at this software over at this site. I hope it helps!