note that above book is highly polarizing
There's no single right answer for getting babies to sleep through the night. Read a couple of books, try a couple of things. Accept that, barring a miracle, you're likely to be sleep-deprived for the first two years of their life. Don't get stressed about it.
And, absolutely, make sure you spend enough time with your partner. Babies can be quite demanding, which can cause jealousy in one partner (usually dad), which can be destabilising to a relationship, so occasionally take time out to remember why you're together.
Oh, and congratulations. Enjoy it.