I have information here on 4 boards that use Zynq 7000 chips:
My interest in Zynq began when I heard that EBAZ-4205 boards were available for about $20 and offered me a chance to learn about the world of FPGA. Since then I have discovered the Antminer S9 boards which are now available for the same price and are in many ways nicer than the EBAZ-4205. Both of these are "surplus" boards from obsolete bitcoin mining systems.The Zedboard and Zybo are commercially available "demo" boards. They are significantly more expensive than the surplus bitcoin boards, but offer handy features and comprehensive documentation.
Much of this information was written when I only had the EBAZ 4205 to work with and was struggling to figure it out. My effort to reorganize this is a work in progress.
Tom's Computer Info / tom@mmto.org