DO NOT USE ADOBE ACROBAT READER!!! Unless you have no choice, like when you're work you may have company policies that restrict the use of other software but Adobe's free reader.
Adobe's reader actually is not free. Monetarily yes it is free but... Read the reviews, ladies and gentlemen, it is BLOATED. When you download the latest Adobe reader now, it's like a 70 zillion bytes bloated. It installs Acrobat.com, which you most likely will not use, and so on. Plus when you actually use it, it eats up a lot of memory space.
Adobe's reader loads fast... But if you were tech-savvy enough you would have noticed that it pre-loads itself when you start your computer! It's not really fast. But yeah sure, that pre-loading helps get PDFs opened faster. But... it also helps use up some of your memory which you could really use for something more useful.
Oops, this is not about Adobe's free Acrobat Reader for viewing PDFs. This is about the very simple, very light Foxit Reader.
The top two PDF readers out there as alternatives to Adobe's (and are actually getting better reviews) is Foxit Reader and that other one I'll describe later.
Download Foxit Reader because it just loads faster, consumes less memory, and is just very simply for plain PDF viewing!
I must tell you though that Foxit has some issues with "rendering" PDFs, that is, how PDFs are shown on screen. There are some tweaks you can do (like select "Optimize for LCD screens" in the Options menu), but if you want something that has good rendering, and yet still has that faster loading time and less memory consumption than Adobe's reader, then try the other PDF reader we are reviewing here...