I started by reading “Digital Design and Computer Architecture”. There’s new RISC-V edition https://a.co/d/imzGBK5. The book starts from Boolean logic and transistor technology and goes all the way to assembly programming with everything in between. Most importantly gives great introduction to HDLs. Next I played with a bunch of hardware projects specifically targeting inexpensive Arty-A7 board to get comfortable with FPGA tooling.

FPGAs are hardware, you generally program them with hardware description languages like Verilog.

If you don’t want to buy hardware (reasonable, IMO, since HDL is kind of niche and the boards can be pricey), you could try out the language with something like Verilator. This will let you write Verilog, and then compile it to generate C++ classes which simulate your design.

have a look into hardware descriptive languages, VHDL or verilog and go from there