You should be getting the majority of what you need from your food. However I think Mark and a couple of other Primal 'experts' recommend only a few supplements including Omega 3, K2 and B12, unless you are trying to treat some specific problem I would suggest you start with that.
Perseverance is not a long race; it is many short races one after the other.
I am a horse for a single harness, not cut out for tandem or teamwork; for well I know that in order to attain any definite goal, it is imperative that one person do the thinking and the commanding. Albert Einstein