Hi and Welcome Staffan! I'm glad you found us. I think you'll enjoy WikiTree - I find it really exciting, and you're right, it's very versatile. To become a full member (aka Wiki Genealogist), youll need to sign the Honor Code. For a list of helpful links, please click my name and check out the links I list under my "Greeter" section especially the Sources links and links to my fellow greeters Debby and Maggie, who have helpful information on their profile pages also. If you get stuck on anything and can't find an answer in WikiTree Help, you can post to the G2G forum or give me a holler. Thank you for joining our collaborative tree!
Enjoy!