What is a grader operator and how to become one

For the record I am odur Kenneth Richard,28years old from kampala Uganda. It was right after completing my high school certificate in the year 2018 that I enrolled for bsc in marketing at one of the public universities in Uganda but I would later drop out due to lack of funding since I was under an uncle who told me he's financially constrained since I had three other cousin sister's who were attending university already.
So oneday as I was going about my chores at home I landed on a column in a local newspaper called the new vision paper and there was this Kenyan vocational school called lake naivasha institute that offering trainings for the machines, I contacted them and fortunately they had a small office within the city in Uganda and I was able to schedule an appointment immediately, when I told my uncle about the opportunity he was excited but later told me to get a training from within Uganda and as luck would have it he made a few calls to his friends and there I was in hoima district located on the shores of lake Albert. a
Armed with a backpack and my mattress folded up nicely , I boarded a bus to hoima which was a 6 hours journey and when I arrived, I found other students who had come from all parts of Uganda for the training.
We were taken to a bungalow which was supposed to act as our hostel, it was an empty house without any furniture nor a bed frame so we laid out mattresses on the cold floor and gave thanks to God for life and the new journey which was about to begin. Early the next morning we freshen up and headed to school which was called destiny technologies heavy load plant services located at hoima market. We were made to register our names and then availed PPE (personal protective equipment) reflector jacket, safety shoes and a hard hut and from there the safety training would begin followed by naming machine parts and then simulation without any equipment since they didn't have any.we were given an operator training book for the motor grader model GD663A-2.
The theory class lasted a week and was concluded by an assessment that I passed highly and on Saturday we set off for a trip to Kampala to come and process our learning permits to allow as train on the machines and by Sunday we rolled up our backpacks and jumped on a truck that took as to a remote center about 20kms away from hoima town and we were resettled into smaller groups in different bungalows, we numbered about 120,60 offered the motor grader and the remain