How do I extract AtomicParsley and FFmpeg from zip files into my working directory?

I'm using Sierra Version 10.12.6

I'm new to all this installation malarkey and am having problems trying to install both AtomicParsley and FFMPEG. Both I've downloaded and are in my Macs Download folder but how do "Extract the AtomicParsley and ffmpeg binaries from their respective archives into your working directory" as per the installation instructions??

Best and thanks in advance for your help,