Go to a pharmacy ask a specialist, there are a lots of different vitamins for different people, active life styles, and dietary behavior, just ask them.

I get mine from Whole Foods.
Super Nutrition Simply One Men
they are food based, cheap, I truly started feeling better after starting these, but it could be a placebo effect, I don't care if it is, it works
Sometimes brake them in have, and I just take half in the morning and half at night, allowing the body to brake it down better.

Things to do:
Ask for help
Tell them what you are looking for
dietary/life style
form: tablet, pill, capsule, powder, chewable
Food based/Chemical based.
so on...


Also instead of Fish oil, just though some ground flax seed, in your cereal or baked goods, or smoothies, anything,

Also you could start just start eating foods that contain the vitamins you want.
don't take to many different ones at one time, try to get a multivitamin that contains everything you want,