They're similar. "Talk to" just states that you're making words at them. "Talk with" implies that there's more of a conversation. 99% of the time they're interchangeable. Relevant: http://grammar.quickanddirtytips.com/talk-to-versus-talk-with.aspx

سوال هاي سخت مي پرسي ؟ سلام ، من دانشجوي دكتري حسابداري هستم و در حال آموزش زبان اينگليسي ، خوشحال ميشم با هم آشنا بشيم

"Talk to"...could be like a command, they guy that talk to you don't really listen. "Talk with", is more like a discussion...where both parties talk. Be a "talk with" person!!