How do I start developing

Question

I wanted to develop a simple casino style app how would I go about learning? What should I focus on and how long would this development take?

Answer 1

Where should you start depends on what you want to achieve and on which platform do you plan to achieve it.

www.sololearn.com/faq

What should you focus on? It's all about the practice.

How long would this take? Depends entirely on your resolve and how much time you would spend.