^depends where you can learn more effectively. as I always suggest know lang the basics, how to use the tools and the shortcuts and mastering how to crop images-pero now dami na easy ways to do this with the cs version. classroom learning is good too kasi you have the certificates to prove and marami exercises, thing is you go for a really professional environment who can teach you more than what you can find on you tube. tho creativity talaga is what you really need din and a good imagination how to make use of all the techniques and tools.
ngayon sa u.s may na-approve na sila na bill for 2015 na kelangan certified na ang mga graphic designers, so there will be strict regulations and compliance issues up ahead for those wanting to do business and work in America. Duno how that'll hold for current designers and for outsourced companies/ designers. Tipong certification vs. portfolio tough call baka may regulation fees pa when it comes to company audits. So if in case you plan on taking it up seriously at as they say 'karirin' taking classes might benefit you more.