Be sure to click around their websites since there are all sorts of Shetland goodies available here - including articles on the Shetland DNA Project in the Archives sections, and an interesting family discussion group at www.shetlandtoday.co.uk/discus/index.html.
There is some surprising and delightful Shetland - related material on the above sites. For example, considering books and pamphlets, the latter site has images of a vast array of Shetland books available for purchase. The last time I ordered items from here, the books arrived three days later. In addition, the Family History Society has for sale lists of tombstone inscriptions pertaining to each parish.
*** Please let me know if you find particicularly fine examples of sites relating to Shetland.