I've been a computer science professor for 13 years and have taught thousands of people. The average age of students is about 34. There is NO noticeable difference in how fast young people (20) and older people (40) learn so don't let anyone tell you that.
As far as being too late.... You are 35, you will retire in 30 years when you're 65. You've been working 13 years so far in the other industry. That means you have over TWICE as many work years left as you've already used. You're only 1/3 the way through your working adult life. Is it too late? Only if you plan on getting hit by a bus next week.
I do recommend getting organized classes at some point. They save you time, keep you from creating bad habits and aren't that expensive. Your wage only has to go up 25 cents an hour for one year to pay for one college class for one quarter (3 months).
As far as being too late.... You are 35, you will retire in 30 years when you're 65. You've been working 13 years so far in the other industry. That means you have over TWICE as many work years left as you've already used. You're only 1/3 the way through your working adult life. Is it too late? Only if you plan on getting hit by a bus next week.
I do recommend getting organized classes at some point. They save you time, keep you from creating bad habits and aren't that expensive. Your wage only has to go up 25 cents an hour for one year to pay for one college class for one quarter (3 months).