How do I become a decent programmer coming from no experience?

1. Start with mastering the basic programming concepts (but not the syntax). Conditionals, loops, functions, recursion, oops and so on. Learn how a program is compiled/interpreted/executed. Learn about how functions use stack.
2. Learn the basics of Data Structures & Algorithms. Yes, you can always look up algorithms or use libraries. But learning them will expand your mindset and how you tackle any problems. For example, if you know binary search, you can do loads of search operations in sorted arrays by modifying the binary search algorithm.  
3. Choose any language. I normally recommend C. The language is pretty expressive and simple. But you can choose one you find comfortable with. The language you choose decides the area you want to work on.
4. Master the basic syntax. Any good programming books can teach you that. If it’s C, read K&R. Just the very basics would do. Variable declaration and initialization, if-else conditions, for-while loops, functions and so on. Since you are already comfortable with the concepts, this shouldn’t take you more than 24–48 hours.
5. Start building something. If it’s Python, you can build a web scraper that auto-downloads images. Now add GUI to it. Keep improving it. You’ll get stuck. When you do so, try learning how to solve it. Google and StackOverflow will help you tremendously. Now do more projects.  ?
6. Do an internship. It doesn’t have to be a paid one. But make sure that it’s atleast 2–3 months. You’ll learn a lot if the company is good enough. I learnt more during my internships than from college. But stay away from companies that ask you to pay for internships. ?