This is a beautiful song off Buckley's debut 1994 album "Grace." The original was by Leonard Cohen but I transcribed this from Buckey's version. My tab is similar to the first tab of this song but there are some changes and I've included all the lyrics.
Eighth note triplets are just groups of three notes that fit in the space of one quarter note. Counting them as tri-pl-et makes them easier to time and play. Here is a video if you want to learn from someone https://www.youtube.com/watch?v=wksS_klLRPo.