That the 1st year can feel relentless, and, in retrospect, the toddler years are a doddle compared to the teen years. Enjoy the years where you can distract an almighty tantrum with a single chocolate button. For some reason, my teen gives me dirty looks when I try this strategy with him now.
Don't waste time worrying about what others think when your baby is screaming in the supermarket or your toddler is throwing themselves on the floor. People are probably looking at you in solidarity, not to pass judgment.
That personality plays a huge role in your baby/child's temperament. My children are all so different despite having broadly the same parenting approach. Cut yourself some slack if your child's a bad sleeper, a screamer, a runner etc.
Just remember that every stage passes at some point.
You won't use half of the baby paraphernalia you are told you need. Start with the basics (cot, bedding, car seat, changing mat, pushchair, sleepsuits, basic baby bath/foam mat) and then add anything you feel is missing, or the things that your baby enjoys/tolerates/finds soothing.
A normal bag works perfectly well as a changing bag, with the bonus that it can be used for years to come.