Web Application development

hello we, I have an application that I want to build it in the next week the application will be like a for health program the users will be able to pick categories and after they see which categories present like treatment anxiety they should resonate and get the description. Check online always be available for them to ask him questions and there will be a category that will provide them question tests to see where they're standing now in the level of their problem I have some examples for the question tests to build like it so we can connect it as a maybe page.
The purpose is they should go in
Pick it program and after date press on buying. Get a specific program with audio files that I will insert into the application it should be flexible for me to insert the audio files .