CorelCAD book?

I have been working professionally with AutoCAD since version 2.6. Now I am retired and would still like to dabble with CAD for some personal projects. Problem is, it’s a bit expensive for me to take on my own AuotCAD license. I purchased a copy of CorelCAD and pleased to see how similar to AutoCAD it is. That being said, I still do have questions about things that I could use some help on. With AutoCAD, I had several pretty good books that covered a range of topics. I cannot seem to find anything at all that supports CorelCAD. Any suggestions? Thanks!