I've made few video tutorials for www.adrenalineparty.com
who is proudly showing them to rest of the world for free and no registration.
How ever, i know how to make maps but i dont make UT3 mapping tutorials because most of it can be learned from UT2004 tutorials.
If you guys need a tutorial on any subject, please let me know by posting request at www.adrenalineparty.com
forum and i will make something up.