How can i add custom fields in registration form (text boxes, drop down, multiple choises etc)?

Hello sir/madame, i just purchase the "membership" plugin and i'm trying to find out how to make a registration form, with custom fields (text boxes, drop down, upload pics etc) so i can have more details about my customers and those who will register in my website. But i can't find this option in your plugin. The purpose that i bought this plugin is because i need a custom registration form in my website and also a way to use some privileges for the registered users (like extra pages and some content hidden from non register users). Please help me or suggest me what i can do. I'm a new user in wordpress and i don't have any further skills in programming. Thank you very much for your time.