Don't be afraid to take that leap of faith and start your journey as a coder. Everyone starts with the same amount knowledge in programming... NONE
No matter the reason you want to begin our journey, you are not alone. There are many people that will be taking the leap if faith with you, look for local user groups!
If you dont understand something, join the club. There is always something that will stump you. Don't shy away, embrace it and learn from it.