- Helsinki in a nutshell (sights, events, restaurants, shops...): http://www.visithelsinki.fi/en
- Public transportation schedules: http://www.reittiopas.fi/en/
- Tips for buying the single tickets: http://www.hsl.fi/EN/ticketsandfares/singleticketsanddaytickets/Pages/default.aspx
- Weather forecasts for Helsinki: http://en.ilmatieteenlaitos.fi/weather/helsinki