-o logfile
-nd #no directories
-nH #no host directory
-P prefix directory, #i.e. where to save to, default .
--header=header-line
--referer=url
-U agent-string or --user-agent=""
-r #recursive, default depth 5
-l depth #default 5
-k #--convert-links for local
-m #--mirror, -r -N -l inf --no-remove-listing #an FTP thing
-N #--timestamping
-p #--page-requisites, dependencies even if beyond depth
-H #--span-hosts
-np #--no-parent, never ascend

so for mirroring I often want wget -mk -nH or wget -mk -nH -np