I want to create an website application (I Have VS2012), which is an uploading software, for my website everythingishere.net. This app will not needed to be installed and will open right away showing my details with a "next" button. When the next button is pressed, it will take you to the 2nd page, which has categories to choose from (according to which the software will choose the directory on the server to upload) with some subcategories, a file or folder choosing button and an upload button. When the Upload button is pressed, the software will change into upload mode and will show a progress bar, under which there will be a place for name and email (which user can fill up while the file is uploading). All these details will be stored in a database.. Please Help!!!!!!!
Who are you using for hosting? Sometimes there are scripts on the server that do all of the things you mentioned (even the progress bar). And your hosting company does not this type of add-on, you can find a free file uploading add-on and ask your web host company to install it on the server for you. It would come with its own manual and reference so it would be easy programming from there in PHP or whatever language you are using.