Is it to talk with someone or to talk to someone? I've seen written both expressions. Are both correct ? Do they have the same meaning or not?

What means Bank Holiday? I know there are days called bank holiday what kind of days are those?

what is the difference between have been to and have been in? I've been to Paris means the same as I've been in Paris?

What is your experience in italki? Hello everyone! I have recently joined this community and this is my first entry. I'm Spanish from Madrid and I'm learnng English. I would like you to tell me about this site and the best ways to learn English through it and contact with other people learning Spanish. I can help you with your Spanish of course Thank you