I'm trying to replace my distro's CL install, to use the latest and greatest and mostly because I want to control where things are placed -- /usr/local instead of my home directory. 

I have downloaded and installed SBCL-1.1.8-x86-64.  That works.
I have downloaded the ASDF tarball.  The readme and manual are pretty clear except for one little nit.

Should I uncompress the tarball to /usr/local/share/common-lisp/source? Or, should I unzip it somewhere else (/usr/local/asdf-3,0.1), then (load #P"/usr/local/asdf-3.0.1/asdf.lisp"), and let ASDF put everything where it should go.

And, may I humbly suggest an INSTALL text in the tarball that would give people whose smarts are taking retirement a step-by-step guide?
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Thanks in advance,
David A. Cobb, one time Mainframe T-Rex.
Old dog trying to learn a few new tricks.