I was = yo estaba o yo estuve I habe been = yo he estado yo estuve allí, yo he estado allí

Hi, The main different between both verb tenses are similar as present perfect and past simple in English: - Present perfect (I have been there/yo he estado allí): the action has been done recently, and maybe have still influence in the present. - Past simple (I was there/yo estuve allí): the action has been done a time ago, it's completly finished. I hope it helps you.

- Estuve allí - Yo he estado allí