The Logodesign-Portal
The Logodesign Guide will give you all the necessary information to help you create good logos. There are many little aspects that make up a good logo, but there are also many small things that run a logo down.
Logo design is a very extensive subject-matter. There may be lots of pages about it on this website, but this is still just the tip of the iceberg.
I have organized the Logodesign-Guide into chapters to keep it manageable. This way, you can take the whole issue to heart in several steps.
Chapters on the topic of logo design: