If I remember correctly some of the certifications require "experience." For example, the Certified Financial Planner (CFP) designation requires 3 years of full-time qualifying work experience. This alone can make it tough for someone to "jump in head first". There are also minimum education requirements (bachelors, masters, etc) and pre-approval courses must be completed just to sit for the exam (with limited exception).
Internships, assistantships, and entry-level training programs are all a good start. You will see CPA, CFP, CLU, ChFC, CFA and a number of other designations attached to the names of many financial planners. CPA leans towards taxes, CLU is insurance oriented, CFP is comprehensive (little of this, little of that), ChFC is close to CFP, and the CFA trends towards investments. Any and all are worthy and compentent titles. I most often see CFP and CPAs doing comprehensive financial planning.
I wouldn't recommend earning one or more of these titles BEFORE looking for a job. As I stated, its not even an option in some cases. Also, the costs of these programs can be very high. Even though I have Economics and Business admin undergrad degrees I was not even close to covering the pre-requisites for a CPA cert. Our company estimated the costs to be > $70k for the accounting pre-reqs, a masters of accountancy, and the CPA certification process. On the other hand my CFP was easily less than $10k. Companies will sometimes pay the expense for you also!
Good luck in your endeavours. I am sure I forgot a designation or two, and I apologize in advance. If you want to know more, google any of the common designations and you should hit paydirt.