salutations,
first of all, you're welcome. we are always glad to help.
well, we could help you with Sanskrit, but, unfortunately, we can't help you with Tibetan... we don't know this language.
Tibetan alphabet and Sanskrit alphabet are, indeed, similar. that's because the Tibetan alphabet is based on the Sanskrit alphabet (called Devanaagarii, with means "the alphabet of the city of God.".).
having all this said, we thought you might like to take a look on this page:
http://www.omniglot.com/writing/tibetan.htm
we hope it helps. any other doubt or comment, you can always ask.
salutations,