If you want to easily and quickly save data in your Unity Project, you have found the correct asset. With Save Load you can save & load any variable from anywhere in your code by use of it's key. For example: You have an integer called Score. You can set or retrieve it with just one line of code.
Support for your own custom classes is included, with an example class already available.
Save Load currently supports both binary and xml files.
All code is documented.
A manual explaining every detail is also included.
You can find the manual here.