I would /not/ suggest starting with Dhalgren. You will enjoy it more if you learn how to read Delany from his other works. Work through his super-accessible shorts, then Stars in my Pocket for an intro to theme and style, then Triton for an intro to disagreeable protagonists in his work. Then back to Babel-17 / Nova for use of language, and then -- if you enjoyed all of those -- on to Dhalgren for the first attempt.