>Google searching<...ah, here we go, easy songs to play in DADGAD tuning. Hey! I didn't know Led Zeppelin's "Kashmir" was played in DADGAD tuning! Wow, that song is super easy! And fun.
Currently I have that Zep song and an alternate rendition of Amazing Grace in DADGAD under my belt. Last night I had to tune my guitar back to standard EADGBE tuning to play worship. Somehow my guitar sounded sad. Seriously, that DADGAD tuning is so beautiful. I now want to become a Celtic player!
Anyway, I used to be scared of alternate tunings, but now I can say with authority that I am hooked!