Abdullah Jubayer developed his interest on electronics when he was 8 years old. His first experience with electronics was with the installation of a light bulb socket in his aquarium. He started learning small electronics work by watching the work of electricians and later applying his skills around the house.
Later during middle and high school years, he started focusing into computer and vocational education. He took courses in Graphic Design, Cisco Networking, Home Repair, Engine Repair (Two stroke), AutoCad, and many more.
One of the interesting projects he worked in high school was the CO2 dragster.
CO2 dragsters are miniature racing cars which are rocket-powered by carbon dioxide cartridge, pierced to start the release of the gas, and which race on a typically 65 foot track. (Wikipedia)
Later in college he worked on several robotic projects including line following robot, micromouse, and also worked with Mechanical Engineers on CanSat Project.