How do I create a tumblr url coz iv been trying and it wont let me its fustrating . help!

some please tell me how to creat a tumblr url its getting fustrating because iv BEEN trying and it wont let me HELP!!!!!!!.

Ah, a tumblr question. Great, makes me feel useful since I have one myself (: At the top of the screen, click the text to the right of where it says 'Dashboard'

Find where it says 'Settings'
Around that page, there should be an option that lets you customize your URL link. Try coming up with something custom. We of Tumblr users, have a ton of inactive accounts that have already taken up great names.. Good luck in your quest of coming up with something new.