We learn code for developing Web or Apps. 250+ programming languages in the world. How may we learn? I don't know how many you know, I only know 5 programming language. But I want to learn more. When I start to learn then I face some problem like syntax, Data type, Functions, error handling etc.. I mostly faced problem with remembering reference. Then I search and find some programming language reference sheet. These sheets help me to learn code fast and easily. Then I realize many beginners facing the same problem. So I decided to share these reference as pdf file.