Every user of EDA tools and hardware description languages such as VHDL and Verilog needs to know about Tcl!
A good working knowledge of Tcl can help you gain greater productivity in using EDA tools for FPGA and ASIC design, but many Tcl courses and textbooks focus on using Tcl for general-purpose computing applications. At Doulos we understand the needs of EDA users, and our courses and example materials concentrate on those needs.