A few useful links

Transport:

http://orario.trenitalia.com/
http://www.bellaumbria.net/Spoleto/maps-road-map_eng.htm

Comune of Spoleto:

http://www.comune.spoleto.pg.it/prehome

http://www.tiscover.com/it/guide/22612it,en,SCH1/objectId,RGN69081it,season,at2,selectedEntry,home/home.html

Spoleto festival:

http://www.festivaldispoleto.it/

Sights in Spoleto:

Rocca Albornoziana (Castle)

http://www.ktucitywalks.co.uk/478.html

Province of Umbria:

http://www.umbriaonline.com/english/

http://www.bellaumbria.net/home_eng.htm

http://tourumbria.com/index.html

What to do in the area:

The beautiful mountains of Umbria, with endless hiking, horsebackriding, white water rafting possibilities

http://www.bellaumbria.net/Valnerina/home_eng.htm

http://www.sibillini.net/

Assisi:

http://en.wikipedia.org/wiki/Assisi

http://www.assisionline.com/

http://www.sacred-destinations.com/italy/assisi

Perugia:

http://en.wikipedia.org/wiki/Perugia

http://www.perugiaonline.com/

http://www.comune.perugia.it/

Bloggers & other visitors

http://larry-amoroma.blogspot.com/2008/07/excursions-in-umbria.html