Did you try it on the '100 most common words' setting?

It does throw a lot of new words at you, but after a while, you get a lot more that you have already seen.

But it does help a lot if you have a basic vocabulary to start with.

I was going to suggest that you might like to look at the Dreamwidth page of someone who occasionally posts in Welsh, but I think that would probably be way too hard (I'm certainly not planning to read anyone in German for a long time yet!)