I want to get a nutritional certification but how/where do I start, I want to LEARN

I am considered a "Nutritional Advisor" through Advocare and I have done a LOT of "study/research" on nutrition. But due to the fact that I have so many people looking to me for answers AND trying to get/keep my family on the health & wellness track I desperately want some type of certification! (My son has ADD & a TIC disorder and I have meneires disease...I know from my lil' experience that our eating effects our issues!). W/o stepping into an actual class room and the internet being what it is..I need to find something online because I still have a lil' one at home. I want to eventually make this a career move!