Remember to use :help / rather than google and stackexchange.
/<pattern> -- search forwards
?<pattern> -- search backwards
/<pat>/3 -- search forwards for <pat> then 3 lines further
/<cr> -- search again for last used pattern
//4 -- last used pattern, then 4 lines
4n -- repeat last search 4 times
4* -- search for 4th occurrence of word under cursor
4# -- like 4* but backwards
gd -- (for C code -- go to local declaration)
gD -- go to global declaration (C)
/<pat>/;/<pat2> -- find <pat>, then find <pat2>
I define
nnoremap <A-n> 1n " to quickly skip through searches
note that <S-n> already searches backwards,
but n is a prefix of nnoremap for example,
so can't automatically skip forwards.