Here's what worked for me and my 3 kids- not saying anyone else needs to do these things, or that my ideas are right...
Get a good comfortable carrier and use it from day one. Babies are little monkeys and they like to be carried around, and suck on their mums- they can do this in a carrier.
Breast feed everywhere and anywhere- and don't even consider being worried about it.
Get a super king sized mattress on the floor instead of having beds and sleep with the baby as long as you/they want. There is enough room and no one falls out of bed.
When they won't go to sleep, do sudden, very jerky deep knee bends holding baby closely on your chest, something like the motion of going up stairs in a jerky way. I have put so so so many babies to sleep doing this- it is magic.
Don't give your baby screens and don't use them yourself. Boredom is good for kids and for parents- that's when people read, or make things up, or play music.
Think about what it takes to give a human confidence in him or her self (no simple answer, but really important to consider how to help your child towards this).
For boys use a measuring cup to potty train- catch the wee and show him how much he made. If he is mathematically minded he can learn fractions at the same time.
Don't worry about things- every human was a baby once and was brought up and survived, more or less. You can't do a perfect job that is better than everyone else's, but, paradoxically, it is really great when each parent is in love with their own baby and thinks they are doing the best job ever!