Gaelic (or Scottish Gaelic as it is sometimes known outside Scotland) has similarities to the other Celtic languages, and is particulary close to Irish (or Irish Gaelic) to the extent that a mutual understanding is possible. Another variant of Gaelic is spoken in the Isle of Man (between England and Ireland) called Manx Gaelic.
Sabhal Mór Ostaig is a college on the Island of Skye which is the centre for teaching in the medium of Scottish Gaelic. Information about Sabhal Mór Ostaig is also available in English.
Further information on the Scottish Gaelic language is available here: