I have some app developer courses. I've made some small games like tic tac toe or guess the number. You really need to know code if you wanna make something serious.
it depends if you want to develop for android or ios.
Android uses java
Ios uses c.
I would go with android as it has a larger install base. You want to download a program called 'Android Studio'. Its free, google it.
Next you wanna practice making small apps, then moving on to uber and snapchat clones.
Search for a guy named 'Rob Percival'. That's the one I used. You can either buy his course or find ways....
If you know what I mean...
The rest as they say, depends on you and how serious you are. I hope you make something great. It won't be easy but it's rewarding.