Welcome and I am sure if you have any question people on here be only to happy to try and help.
As Don said look at the threads at the top to start off. There are also many good resources on this site.
You may want to take a look at this link shows how to set up a virtual lab http://www.securityaegis.com/pentest-lab-web-application-edition/
Try and get involved if you are in the USA try go to defcon or see if there are any local 2600 meeting near you. if you are in the Uk try http://ypisg.bcs.org/
just get involved with security this will let you meet new people and make some good contacts.
I have a website too for anyone who is new to penetration testing that may help with lots linkshttp://www.jamierougive.co.uk/index.html
If you dont have any certification think about where to start depending on your current expierence and where you are based. CISSP,ECH,CREST,Security +,OSWP,OSPC,eLearnSecurity,hackingdojo there are lots more too depending on the job you want in security.
I hope this helps