Well, of course, the easiest way is to find any special application development service like https://appmemobile.com/ and asked them for help. But if you really want to do this by your own - you can do it! There are a lot of lessons, tutorials and free courses, some cool articles you have already got from other users. Just find some great online courses, even Youtube tutorials or any other stuff you like, create your idea to the smallest details and go on! When I created my first app it was hard, but I did this, and now I am working as an app developer and I am really happy. Who knows, maybe after that, you will start your own development way.