Then click on Skriv på listan at the bottom
Fill in first name then surname
email address so that they can email you to verify the signature
comment - these are limited in characters
finally position / title
Then click on "spara"
You will receive an email confirming the signature and all you have to do is click on the link to do so.
This is an English translation of the text
Swedish petition. Start here http://t.co/IftOfr4i7Y click on "Scriv på listan" at bottom and rest is easy to work out pic.twitter.com/GPryQQIT3X
— Dorothy Lobel King (@DorothyKing) October 26, 2014