The installation documentation is in these (plain text) files: INSTALL-sys-unix.txt - installing Lucida OpenType as system fonts on Unix. INSTALL-sys-mac.txt - installing as system fonts on MacOSX. INSTALL-sys-windows.txt - installing as system fonts on Windows. INSTALL-TeX.txt - installing Lucida OpenType in your TeX setup on any platform.
Do I have to follow both,
INSTALL-TeX.txt or is the former sufficient? I know LuaLatex can use system fonts, but I am afraid that there are some TeX settings I might miss since there are many *.fd, *.fontspec and *.sty files in the zip I got.