What is real source about knowledge for coding?

Question

Many things about knowledge, but where real source about it. I ever heard from Albert Einstain, he say "Only One Source of Knowledge, there is Experience"

Answer 1

It's imagination.

Answer 2

Here is a very rich video, detailed (step by step) guidelines for starting online Career ( learning Web Development [Front End,Back End & Full Stack ] and other Programs):

https://youtu.be/Zftx68K-1D4

⏩⏩A very good reference:
https://www.sololearn.com/Discuss/284542/?ref=app

⏬⏬By August Mein:⏬⏬
1. Choosing your first Language

You can choose any language.
if you can't decided here the guide :

HTML is used to make web structure.

CSS is used to give style or animate web

JAVASCRIPT is used to make dynamic web (you can even make game)

PHP is server side scripting language

SQL is database manajemen in server side

C++ is multiplatform OOP based programming language (you can make many app including Games)

C# is more spesific (windows os) than C++

Java is used to build app that can run on any devices (including Android).
JAVA is not JAVASCRIPT

Python is multiplatform OOP based programming languages with easy syntax (compared to other OOP Language)

Python3 and Django for building strong and very rich website ( flask is used for small website,but Django for everything)

kivy ( a Python Program for anroid )is used for making android apps.

Kotlin is Google's new Program for android.
Google's new android version is built on Kotlin.Kotlin is dynamic and co opt with latest technological development (such as Augmented Reality, Artificial Intelligence, Facial Recognition etc)
It's coding process is also simple and as like Python.

Swift is for building apple / IOS app .

To improve coding skills 2nd link is helpful:

https://www.sololearn.com/Discuss/437973/?ref=app
https://www.sololearn.com/discuss/1033194/?ref=app