[UYChuH]

PG's ANSI common lisp was one of the first books I learned to program from. I still prefer it over Practical Common Lisp, partly because I appreciated the greater depth (I felt) it covered the basics in, and in that it was slightly more abstract...

But mostly because Appendix D gives a really succinct description of the language, key functions, all the different parameters to FORMAT and LOOP, and all the different read macros. Never underestimate the value of a good appendix!