I would really like to become a PPC/SEM freelance consultant. I've worked in the field for a little over a year and have been very successful at it, but I'm frankly fed up with working with for current employer (a small digital advertising consultancy). For those of you who successfully freelance or operate your own business in this space how difficult was it to get started? What resources would you recommend? Do you have any advice? I'd be very appreciative of any guidance that you could offer. Thanks in advance.