If you like watching videos, Youtube and tutorialspoint are both great for that.
If you like following along and trying the code yourself, then Codeacademy and SoloLearn are both great.
If you like reading, then use any of the written tutorials online by Googling them.
Also, consider something, what programming language do you want to start with?
If you like working on web pages, you'd have to consider if you want to work on the back-end or front-end.
If you want to work with programs, then you'd have many great things to choose from such as Python and C++, choose
whichever fits your style.