How to design a logo of letters

Before and After Magazine have a great document on how to design a logo of letters. The PDF is really great explaining the different techniques to design logos using letters using stroking, angling, altering, reversing, crossing, bridging … etc. Really excellent article for designers and also a great magazine which have been sharing its practical approach to graphic design since 1990. Certainly logo design is lot of thoughts and creativity but it is also experience and techniques.