We know little certain about Sappho. Most of what we have to go on is the poem fragments themselves. That hasn't stopped people from speculating at length.

The Suda says this about her.

Sappho writes in the Lesbian Aeolic dialect (there is a brief introduction for the dialect.) In the commentaries I'll note the Ionic or Attic forms when necessary.

The DivineSappho at Peitho's Web has a number of translations of Sappho's poems, as well as Greek versions as they appeared in Wharton, in Unicode.