Gratz man! Or sorry some would say, iv heard kids are both the best, most exhausting and frustrating things ever invented, knowing myself and my siblings the two later is probably more true.
Remember rules, boundaries, limitations. If your kid misbehaves he needs to be reminded of his role in the pack and your status as pack leader. Dont hurt the kid just show that you are dominant by pinching it in the neck and at the same time making a "tssth" sound with your mouth. Dont reason with it, dont argue with it, dominate it. For a kid to be balanced...
And
always when suitable, be nice to your kids. GL with all that the future throws at you!