I usually use magazines, here on the internet i would suggest the Flickr public group GRAFFITI=LETTERS.
I would start this workshop the same way i would start any workshop session, with a lot of pictures to look at, that definitely helps for inspiration. ::CAUTION ::This activity requires investing time and effort to practice. Materials needed: A4 paper, pencil, rubber, chisel point marker pen, thin black pen and a good selection of colour pens.
This online workshop will guide you step by step to realize a colorful piece.
