Yes! You are allowed to use HTML Wave for educational purposes, and you are allowed to use HTML Wave at school, university or any other educational institute!
The templates are free to use both personally and commercially and no attribution is required, but you have to modify the templates at least a little. You are allowed to sell websites created from the templates but you are not allowed to sell or redistribute unmodified templates.
To create a new website project.. go to File > New > Website project, then write the website name and select the projects path folder, and select files to include, and select a template or start from scratch.
To include a stylesheet or a javascript file or a favicon, click on the pin icon from the toolbar (if the toolbar is hidden, go to View > Toolbar to show it),then select the type of file you want to attach
Html Wave currently provides function to include online link for Bootstrap,JQuery,JQuery UI, and AngularJs, to include one of them, click on the pin icon from the toolbar (if the toolbar is hidden, go to View > Toolbar to show it), then click Framework/Library
To insert Bootstrap components, first, go to View > Bootstrap components to show the Bootstrap components panel if it is not visible, then select which Bootstrap component to insert, from the select box at the top
To upload file to FTP, go to Tools > Upload file to ftp, then enter FTP server details and click upload. If you don't know the FTP server url, contact the web host.
To run PHP files you first need to install a localhost server if you don't already have one installed. In HTML Wave set localhost directory to the root directory of the localhost server. (Which might be called htdocs). afterwards. create/open a PHP file and save it to the server's root directory (or a folder inside the root directory) to update the preview.