Congratulations! 

You will feel as though you are doing everything wrong or have no idea what you're doing. This is not true. You will make mistakes for sure, this isn't a failure, learn from it. Do what works for the baby and yourself and ignore the "perfect parent" influencers.
It's a hard slog, but probably the best thing you'll ever do, so enjoy it, be present in the moments, because they'll be a teenager before you know it.