The new open-source book aimed at teaching hardware and software developers how to efficiently program FPGAs using high-level synthesis (HLS) is now available. The book, “Parallel Programming for FPGAs,” by Stephen Neuendorffer, Principal Engineer at Xilinx, together with Ryan Kastner from UCSD and Janarbek Matai from Cognex, is a practical guide for anyone interested in building FPGA systems. It is of particular value to students in advanced undergraduate and graduate courses. But it can also be useful for system designers and embedded programmers already on the job.