:tabnew or :tabnew {page.words.file} - open a file in a new tab
Ctrl + wT - move the current split window into its own tab
gt or :tabn[ext] - move to the next tab
gT or :tabp[revious] - move to the previous tab
#gt - move to tab number #
:tabm[ove] # - move current tab to the #th position (indexed from 0)
:tabc[lose] - close the current tab and all its windows
:tabo[nly] - close all tabs except for the current one
:tabdo command - run the command on all tabs (e.g. :tabdo q - closes all opened tabs)