You could say, 'I am very happy/ honoured/ delighted to meet you/ make your acquantaince' although this is very formal and would be used when meeting distinguished guests.

انا معلم عربي وأتحدث العربية بشكل ممتاز و شهر واحد و سوف تتكلم عربي I am a teacher and Arabic speak Arabic very well And one month and you will speak Arabic

Hello, There are so many possibilities to answering that specially in informal ways.There are no limitations to it and depends entirely on the situation and the relationship with the person you are addressing whether a casual acquaintance or a friend etc.. You could be stating in your answer something concerning that person or referring to the reason why it is good to know the person as well or just hinting non verbally to having the same feeling.

yeah you can respond by saying good to meet you too want to get a drink or something

"It's my pleasure" is not very good. "ditto" is good, but perhaps best is "It is good to know you, too". To be honest I think "good to know you" is not very precise, so it's difficult to reply. I can't imagine when someone might say "good to know you".