Did you read these instructions?
Did you send a support ticket to Appnitro (this forum is not the place for tech support of this sort concerning installation assistance).
Appnitro do provide free installations so I would ask them first. You need to log into your Machform members area (where you purchased it), and submit a support ticket there.
First you need a hosting account with a web host.....like GoDaddy (for example). That's something you pay monthly fees for (the hosting service) You need an FTP program, or use the File Manager tool that your hosting account uses (e.g. in the File Manager utility in cPanel). If none of these things mean anything to you ask your web-host for assistance.