Bernd 02/13/2018 (Tue) 20:12:25 No.13661 del
I see.
For me the first problem would be the pronunciation to solve, how to read the words. Almost as if I would learn a new alphabet. For my eyes such words as rhywun - suspecting the w is u - or ddaw - for the double d - are very weird.
Then I would try to grasp the basic grammar, I'd check how similar to other indo- languages.
Then see how basic sentences look like. Then maybe collocations.

Useful list btw. I've pal, a fan of Celtic stuff, I'll send it to him.