I am trying to make one simple app for my own purposes. It's very simple idea, user enter Name of book, author of book, number of pages, and date he added book. All string type data. On the right side of the app, there is listbox that will show books that are already stored AND, new added books. When user click on the item from list, in right text box there will be displayed all this data (Name, Author, Number of pages, Data). But, problem is how to save data, load it every time and add new data. I don't have experince working with databases. This is image of app GUI: