Welcome to Unedited Security. This site contains a number of useful references for new ethical hackers. On this site you will find references to useful tools, for both enumeration and exploitaion, and a quick walk through on how to make your own Attack USB stick.
Also, if you are looking for default credentials to access an open service you find, check out the Password Database. This is a small database that is expanded by users like you. If you need a password, but don't see it, please add it after you have found it. Help your fellow hackers.
Best of luck in your hacking endeavors.