Stylus online zine writer Todd Hutlock (an old colleague of mine at Alternative Press magazine) gives you the basics of Detroit techno here. After reading this, I realized we are overdue for a major revival/reassessment/reissue bonanza of this music, much of which remains long out of print or scattered on hard-to-find compilations. Sounds like a job for Soul Jazz, a British label that specializes in reissuing CDs that contextualize musical genres/movements, and does so in beautifully designed packaging.