Military girlfriends/ wife’s

So my boyfriend just got deployed for his 3rd time but for the 1st being with me... I’m about to leave for basic training in a week or 2 and I don’t know what to do. I’m emotional about him leaving but excited that im going to basic ... it’s just hard because I don’t know how we are going to communicate... especially because I don’t have all the information to send him letters and he doesn’t have mine.. so we have to rely on others to help us out..