Hi Joel
Sorry for my late answer.
About Stockholm in Mars, since i don't know what you like to do, i'm sending you a link to a good website.
http://www.stockholmtown.com
The weather here is not the best for the moment. It's not cold but it is kind of gray... boring. =)
I can give you a good tip about the metro/bus tickets in stockholm. Do not by the ticket from the ticket counter. Their price is 40 SEK for one jurney. If you by the ticket in advance at a kiosk the price is 20 SEK.
If you by the stockholm card you'll get free entrance to a lot of places including travelling around Stockholm.
If you want to see where the royal family lives, you have to take the metro to "Brommaplan" and from there a bus to "Drottningholm". Its a bit outside of the center but a nice place visit. It is of course open for everyone, exept for a few private sektions.
For nightlife, if you are intrested in seing some celebrity I recommend Café Opera (its near the water in the park Kungsträdgården) walking distance from "T-centralen", Spy Bar or Sturecompagniet both close to metro station "Östermalmstorg" (Stureplan).
Othervise the pubs in the south part of the center are the cosiest... and have better prices. Metro "Medborgarplatsen".
Hope youll have really fun!!
Kind regards//Anna =)