I was looking for a resource to get started too and stumbled upon this new book. I haven't picked it up yet but liked all No Starch Press books so far.
Fpga4fun is a other good resource if it's still around.
Try and do some stuff besides just another softcore CPU in the beginning, even if it seems redundant. Maybe try a VGA pattern generator with some cosine LUTs or something.
And the online learn by building simulator. https://8bitworkshop.com/v3.10.1/?platform=verilog&file=cloc...
they have tutorials, you can get compatible boards for around $20
We're going to work on improving our resources for getting into FPGA programming. Stay tuned.