Head over to the step-by-step Guide page for information how to install the software.
Blocktinu Tools for Microsoft Windows: blocktinu-tools-1.2.2-install.zip
Download, extract the files and run the installation program.
Drivers for the USBasp programmer for Microsoft Windows: zadig-2.5.exe
-- Download and run the program.
-- If the above link did not work for some reason just go to zadig.akeo.ie/downloads/ and download the latest version.