Some links:

Sites with general infos:

www.comune.asti.it Asti municipality web site

www.comune.roatto.at.it/Web-comuni/dettaglio_menu.aspx?categoria=Informazioni&comune=Roatto Roatto web site

www.provincia.asti.it Asti region web site
www.terredasti.it Asti region touristic infos
www.albain.com Alba touristic infos
www.turismotorino.org  Turin touristic infos
www.inforiviera.it Liguria and Mediterranean coast touristic infos

Sites with infos related to particular events:

http://www.comune.asti.it/manifestazioni/ Asti related events

http://www.astiturismo.it/italia-piemonte/manifestazioni-asti.htm Asti region related events

http://www.provincia.asti.it/old/mercati_ambulanti.pdf Asti region village markets
www.festivaldellesagre.it Festival delle Sagre (second Sunday of September)
www.castelliaperti.it how to visit castles normally closed

www.comune.asti.it/turismo/itinerari-turistici/romanico-astigiano.shtml Asti region Romanic churches
www.astesana-stradadelvino.it Wine tourism in Asti region