I wanted to add a tab of Funeral, but this band don't exist in ultimate-guitar.com. An alert said that I should give a link for the band, but where should I write this link?
At the very top of the tab.
Just put a myspace link or something there.

HOWEVER, if the band is unsigned you write the band name as "Misc Unsigned Bands" and then the song name as "Funeral - (whatever song it is)".
Quote by Carmel
You are a redeeming feature for the UG Swedish population.