If you are new to the world of graphic designing in general, and logo designing in particular, your first step should be to get some inspiration from already popular logos. Well explained tutorials are of great help to learn the basics of designing, but to make really good logos you will need your own creativity as well as experience.
We have compiled a list of some popular and useful sources to start learning Logo Designing:
4) Logo Designing in Adobe Illustrator by Vector Diary
9) Logoholic.org– Learn some key aspects of logo designing
10) Get Inspired by logos- Take a dip in LogoPond
A logo design gallery. You can also share your own logo and get valuable feedback.