Join A Corperation That Fits Your Needs and Skills; Whether You Excell at Mining or Industry, or Fighting, or Hauling, You need to Join One That Matches Your Skills.
Another Useful bit of Advise is to Never Fly without Rebuy. Last Thing You Want is to is Lose a Ship You Cnt Afford. And if You Can't? Try to Stick to 0.8 SEC or Higher. At Least You Have a Minimal chance of Being Blown-Up.
Another Thing You Should Consider, EVE Online is a World of Risk. "If you Don't Take the Risk, you Can't get the ISK," (quote from somebody wise, i'm sure)
If You Want To Join A Great Corporation, Join Ephyra, A Laid Back, Relaxed High SEC Corpertion That slowly Eases You Into Becoming What You ant Out Of EVE, Whatever that may Be. Be Warned That Pirates Are Not Accepted.