Yes to nodes, and yes LST, tie around somewhere near the top so it bends somewhere that bends ez without much pressure so it runs vertical, the branches will start to grow up told the light giving you somethin like this ____|_|_|_|_ (underscore would be the main stem) and i dont believe the main cola will grow as big, but i dont know to much about it as i've only done it once [tho i think im gunna start doing it more often]