ok... I guess we could start with some karate history:
karate was invented by Gichin Funakoshi (船越義珍) in about 1920. At that time there were no colored belts but only the white belt, but then how did you know the best one? At that time, it's kind of funny to say, whoever had the dirtiest belt was the best.
Now there are colored belts with which you can easily understand who is the best and your level, the order of the belts is (from weakest to strongest): White⬜ Yellow🟨 Orange🟧 Green (my level, but soon I will become blue)🟩 Blue🟦 Red🟥 Purple🟪 and black⬛
In the next forums I will explain some basic defense and attack techniques😄