Start out living well below your means until you can build up your financial knowledge. I think it is easier to step up your lifestyle once you know you are able than it is to dial it down once you realize you have to.
If you’re considering seeing a financial planner, talk to several before actually hiring one. The most important question you can ask is, “what can you do for us?” Also, I suggest visiting the Financial Planning Association’s consumer site at http://www.fpanet.org/public/
for articles, free tools, and other good information.