Soil test, then decided your goals for the plot.
Either perenial food source, annual attraction plot?
Either start spraying with round up to kill back what's there now, and prep The soil with a good turning, or deep chisel. Disc according to the seed bed you desire.
If not able to spray, disc repeated times days apart to kill out weeds and other competitive plants.
One word of caution, it is highy addictive...lol
Good luck with it and have fun most of all!