I know I know!! I'm late to the party lol 
I don't really expect it to be spoiler free. Those movies aren't exactly new or non famous. They are classic and extraordinary or something so of course it's to be expected that there are spoilers everywhere xD
Previous spoilers notwithstanding... if and when you do tackle Star Wars, I recommend viewing them in the "Machete Order." Don't google it, because the explanation involves even more spoilers. But in short, watch the films in this order:
1 - Star Wars Ep IV: A New Hope
2 - Star Wars EP V: The Empire Strikes Back
3 - Star Wars Ep II: Attack of the Clones
4 - Star Wars Ep III: Revenge of the Sith
5 - Star Wars Ep VI: Return of the Jedi
And just skip episode 1, or go back later if you're really that interested. It's pretty bad.