Assalamu alaikum, As we are getting more familiar with the Arabic, here is a useful article on the Arabic root word system. InshaAllah you will find it useful. Inshaallah next class onward we'll start distributing a page a class on the common words in the Quran booklet.
According to a longitudinal study (conducted from 1998 to 2014), the average time taken to get a first-degree black belt is ten years. Of course, this duration differs among martial arts. The shortest recorded training time is four years, while the longest to get a first-degree black belt is twenty-seven years. The study measured the time taken for these martial arts: Aikido, Iaido, Judo, Jujutsu, Karate, Kenpo, Kobudo, Taekwondo and Wing Chun.
It takes an average of 4-5 years to gain a black belt in karate. Some times longer depending on your age, your natural abilities, body type, coordination levels, fitness levels, the type of sports you have done before, how much you train, how much you listen to your instructor and so on.