Sorry to hear you’re still having confusion. To get the the screen like what i’ve shown there. You need click on the export mode here : http://www.fontsquirrel.com/tools/webfont-generator and make sure in subsettings you choose custom subsettings then you’ll see screen like that.
After unzipping the download, you can ignore stylesheet.css it’s just an example and we already have that code in our style.css. Just grab the .eot, .svg, .ttf, woff files and replace the files in puresimple/fonts folder via ftp. Make sure the name is similar while replacing file in ftp.
After replacing these .eot, .svg, .ttf, woff files, just open your site in different browser or clear the cache so new font gets rendered and it’s not from cache.
I’ll take some time soon to make tutorial for this.