For standard use cases, ASDF should work pretty much out of the box. We recommend you skim the sections on configuring ASDF to find your systems and choose the method of installing Lisp software that works best for you. Then skip directly to See Using ASDF. That will probably be enough. You are unlikely to have to worry about the way ASDF stores object files, and resetting the ASDF configuration is usually only needed in corner cases.