Two great Zynq references, enjoy them:
Another free e-book from Xilinx:
New free eBook: SDR with Zynq Ultrascale+ RFSoC: http://www.rfsoc-pynq.io/
I downloaded the books.
In addition to the courses and these reference books, I believe AMD-Xilinx also provides access to few of their paid courses if you register for their developer program.
