Senior Psychology Major/Bio Minor looking to get into Business

Well I am a fifth year senior at my University, nearing a degree in Psychology with a minor in Biology. I have been on leadership teams at 2 universities as well as through United Way, volunteered, and been all over the country on medical construction jobs.

I think I would be a successful business manager if provided extensive training. I am not opposed to taking several years to "get my feet wet" . I do not expect to come out of school making anywhere near 60k. One thing I will say, however, is that I am very interested in the business aspect of Tech companies and strategies, specifically mobile technologies, medical mobile technologies, cloud storage, hardware etc. I would love to be able to market myself to one of these companies, but where would start? Would I need to go back to school to earn a degree, any good certifications, or would I just need a lot of experience and hopefully work my way up at several jobs?

Thanks for any and all replies