Velcro swaddles are a must. You can practice doing regular swaddles, but I found the velcro ones to be quick and easy. Something about the act of swaddling helps the kid sleep.

Also, gas is your enemy. Look up how to do abdomin massages and leg kicks for when burping didn't get the job done the first time around. Frida baby has a great product called a Windi gas passer as a last resort. They also have a lot of great other products.

You and especially your partner will be the most tired you have ever been. You will be frustrated and angry for no reason. Stepping outside for 5 minutes for a breather while your kid is safe in a crib is perfectly ok for your sanity.