Be yourself, talk about yiyr interests. It's pretty easy talking about things you're interested in. Also ask questions and try to get them talking too. Also, jokes don't hurt. Even dad jokes lol

Maybe, depends what you know, want to know, and what you are using. I have experience with two vpns, 1 free and 1 paid for. The free one being cyberghost vpn and the paid one being privateinternetaccess. I would have to say the paid one offers much more customization and I enjoy way more. I also like that I can pay with a gift card so I don't have to give them my credit card. However, you would need to provide an email so they can send you the password I think. I will say that if you choose to pay with a gift card don't expect it to be cheap. A $50 walmart gift card can get you a year of service. Just using your credit card should be cheaper. Any other questions just ask.