[c-prog] how can I do better my programming skills

[allcoolfree]

Hello friends, I have a bachelor degree in EE and I had C and C++ 
courses.I think I have an elementary degree in programming. I know 
basic programming skills but I have never developed a commercial 
application. I am working as a sales agent in a company but I want to 
pass software developer side. But I'm 29 years old. Is it too late to 
do that? Or what do you recommend for me.