I just linked to the site but it's also available on DAB, and FM: 103.5-105 MHz. Also on Freeview before BBC Alba starts.

As far as specific programmes go, I don't really know their schedule that well but there's often very good Scottish and Gaelic music and song to be heard plus other more general folkie stuff.

It usually merges with Radio Scotland in the evening. So no need to change stations for the shows mentioned above either.