how would i make those a library
On that page, there is a button - Downloads. When you click that button, you get a choice of which compression format to download. Choose whichever one is relevant for your system.
Then, extract the files into the libraries folder in the sketch book.
A library is simply a source file, a header file, a keywords.txt file, and, hopefully, an example folder with example sketches.
There is even an example folder in that zip file that contains a sample sketch. It couldn't be much simpler to get started.
im kinda confused on the different types of files witch are the header and source code files i don't know witch one does what.
Source files contain function implementations. Header files contain function declarations. Source files have extensions like .c, .cpp, .f, .cs, etc. Header files have extensions like .h, .hxx, etc.