BASIC Is a Small Little Coding Language that is very common in 1980s Home Computers (ex. BBC Micro, Commodore 64, Atari 800, etc.)
It is a very simplistic language that can be replicated on various systems. In this guide I will be using Commodore 64 BASIC and Sega Genesis BASIC.

 Part 1: Hello World
 Hello World is one of those things that is and should never be forgotten. It is used on everything from a TI-84 to even a Tomogatchi (probably).
It is a simplistic piece of code. 
HELLO WORLD IN COMMODORE 64 BASIC

10 PRINT "HELLO WORLD"
RUN

if you want it to loop just do this

10 PRINT "HELLO WORLD"
20 GOTO 10
RUN

on the Sega Genesis it is somewhat the same deal. Just without RUN being added.

Another cool thing to learn on the commodore 64 is coloured text

NOTE THIS WORKS WITH PRG Studio! IM UNSURE ABOUT NATIVE C64. 

10 PRINT {Cyan}"Hello World"
20 PRINT {White}"Programmed by Renn"