Here is some links you might find useful, most of them are swedish, but some are translated...

What's on in Gothenburg?
Transportation
Other places that we recommend

What's on in Gothenburg?

Tips about Gothenburg!
Download the visitorsguide here

Gothenburg & co
www.goteborg.com

Göteborg Daily - news in English!
www.goteborgdaily.se

Liseberg
www.liseberg.se

Svenska Mässan
www.svenskamassan.se

Universeum
www.universeum.se

Djungeltrumman - club guide
www.djungeltrumman.se

Restaurangguiden - restaurant guide
www.restaurangguiden.com

Göteborg International Film Festival
http://www.giff.se/us/public.html

Gothia Cup
www.gothiacup.se

Göteborgsvarvet
www.goteborgsvarvet.se

Way out west
http://www.wayoutwest.se/english

Göteborgsposten
www.gp.se

Transportation

Västtrafik
www.vasttrafik.se

Airportbuses
http://www.flygbussarna.se/default.aspx?lang=EN

Stena Line
www.stenaline.se

SJ - trains in Sweden
http://www.sj.se/sj/jsp/polopoly.jsp?d=10&l=en

Swebus
http://www.swebus.se/SwebusExpress_com/

Bus4you
www.bus4you.se

Easy Cab
www.easycab.se

Bus parking
http://www.tkkarta.goteborg.se/Buss_parkering/Bussparkering.aspx

Other places that we recommend

SVIF - hostels in Sweden
www.svif.se

Stigbergslidens hostel
http://www.hostel-gothenburg.com

Masthuggsterrassens hostel
www.mastenvandrarhem.com

Kvibergs hostel
www.vandrarhem.com

Änggårdens Bed & Breakfast
www.anggardensbedandbreakfast.se

City Backpackers in Stockholm
www.citybackpackers.org

Zinkendamms hostel in Stockholm
www.zinkensdamm.com

Skanstulls hostel in Stockholm
www.skanstulls.se/en