Can anyone recommend me a good alternative for Adobe Reader ? I need a software that is fast and light which works on Windows.
I've been using SumatraPDF for a few years now. It was my replacement for Foxit reader when I became annoyed with that product for a few reasons (I won't go into it right now).
SumatraPDF supports various formats if you are looking for more than just a PDF reader. For example it supports:
PDF, eBook (ePub, Mobi), XPS, DjVu, CHM, Comic Book (CBZ and CBR)
It runs on Windows and like Adobe Reader, it is free. It is also very lightweight (just under 10 MB once installed) and has a very fast startup time (less than a second for me, and rendering ebooks usually takes less than 3 seconds).
Here is a screenshot: