Every Pixlogix extension pack includes module files, an installation guide and a user guide depending on the extension you purchase, there also may be import files which can be used by you as examples.
Pixlogix extensions are easy to install. All you need is to have FTP/SSH access details, and follow below steps to complete.
Enable all cache from admin (System > Cache Management) before upload extension.
Extract extension zip package and copy all folders (app, lib, skin).
Upload all folders (app, lib, skin) to your site by FTP.
After uploading all files clear all cache from admin (System > Cache Management).
Logout to complete installation process and login again otherwise you will get 404 Error.
Check “Flexible Forms” Form Builder Magento tab available or not into admin navigation.