Age is just a number in my view.
First I would like to tell you, Decide as to what you are interested IN?
Secondly, Find out the opprotunities in the market, if there is a huge requirement then companies may over look the age. So better choose something which has market and necessity.
Finally.. Class Room training is always better than Online classes.. If there is something you do NOT understand then you have the tutor to teach you, where as in online teachings you may have write an email or google, which is time killing.
Be a Self decider !!!