Most of the greens I grow are in the chicory family, the dandelion family, basically. They all have fancy Italian names and can be found at Grow Italian. They are wonderful when combined with sweet lettuces and other greens like spinach.
I broadcast spread the seeds in a small bed and watch them grow. They are easy to cultivate with the only problem being that slugs love them too but deer don't. Thinning the plants at regular intervals will keep them from crowding and leave few places for slugs to hide.
Try them, I am sure you will be pleasantly surprised.