1) Watch the ORIGINAL, UNMOLESTED versions, preferably the laserdisc version, which had the best picture and sound quality ever released for the "un-special" versions.
2) Pretend the prequels don't exist. They aren't worth your time and add NOTHING to the story...in reality, they actually TAKE AWAY from the experience of the OG Trilogy!
3) Find a copy of Genndy Tartakovsky's "Clone Wars" and watch those instead.