PC project

Hello and thank you for taking the time to read my story. My name is Jared and I am 16 years old. All my life I've been interested in computers. Over the past year I've been saving up my money and learning about each computer component. Currently I own a case, PSU, SSD, HDD, and an operating system. All I need now is the motherboard, CPU, and GPU. I really want a PC to learn how to code my own programs, occasional school work, and video games. Unfortunately ever sense my father left the family in 2012, it's been hard on my mother to spare any extra money. I honestly don't want to ask my mother for any more money because she already provides me with so much. If you could help make my dream come true I would be very grateful.