Suggested Topics in CL

Application Development

Systems programming in Common Lisp a. uiop
Operating systems programming in CL
Hyperkit with CL
Garbage Collection
Integrating with Lisp with more modern languages a. Rust b. Swift c. C++
OMeta II paper
How Emacs is implemented

Book suggestions

Paradigms in AI Programming (by Norvig)
Lisp in Small Pieces (might be separate series at 1:30 EST)
On LISP