Welsh, or Cymraeg, is a Celtic language primarily spoken in Wales, a country which is a part of the United Kingdom. The language itself is spoken by less than 1 million people and so online resources tend to be more scarce. However, like some other minority languages, there has been somewhat of a rejuvenation in interest amongst the adult population for learning Welsh. If you are looking for a language off the beaten path than Welsh could be the language for you.
Duolingo is a popular language learning platform and they offer Welsh. Check out the review here.
The Colloquial series by Routledge covers dozens of languages, including Welsh. The most recent version includes many exercises, answer keys, bilingual glossary, and online audio materials.
Where Can I Study It?
Yes, Zeta-Jones is Welsh. Her major breakthrough role in The Mask of Zorro shot her to the top and since then that is where she has stayed.
Theater, films, and series. Sheen does it all and does it well. The Damned United and Underworld are a few of the films where he plays major roles.
Singer, songwriter, actress, etc.
Responsible for writing The BFG, Charlie and Chocolate Factory, and James and the Giant Peach.
He has sold over 100 million records, so you must have heard of him. Does "Its Not Unusual" ring any bells?