Non Interference When starting out it is easy to get overwhelmed with 'problems'. To help things go smoothly I start with a clean system so initially to make sure that there is no interference between libraries remove all existing libraries from the user library area. This is normally found in a subdirectory called 'libraries' below the user sketch folder. In my case this is
C:\Users\Paul\Google Drive\Development\Arduino\libraries
Delete all the files in this directory.
Obviously this will remove any 3rd party libraries already installed but I have found it a valuable step to make sure a new library works correctly.
NOTE: This step is not compulsory and can be missed out if 100% confident or not a complete Virgin!
Installing User Libraries In the Arduino IDE
To install new libraries in Adruino IDE go to
Sketch|Import Library|Add Library
then navigate to the library to be installed. If it is a ZIP it will be decompressed and installed to the user library area mentioned above namely inside
C:\Users\Paul\Google Drive\Development\Arduino\libraries