How to download and open PDF files? I am a university student that has most of the lectures online as pdf files. How can I get them on my Android phone and read them through Adobe Reader? This is the first time that I have used Android. The version that I have is 2.2 "Froyo".
Download and install Adobe Reader on your phone.  You can find it by the link or by opening up Google Play / Market on your phone and searching for "Adobe Reader".  There are lots of other pdf readers out there too, btw.
Either download the PDFs from whatever website they are on using your browser (the built in browser is fine), or download them on your computer, connect your Android phone by USB cable &amp; mount the SD card, copy the PDF files to the SD card, disconnect your phone from the computer, and finally use the file manager (usually called "Files" in the app drawer) to navigate to the PDF file you want to read.  Tap it's icon once and it should open in your PDF reader.