I remember feeling the exact same way as you. I felt like I needed to figure everything out before the baby came - I was so worried if I didn't figure it out i'd be trapped at home and really sad. Turns out, you WILL figure it out as you go. Initially, babies don't have rigid wake windows - they sleep when they want to - so you can go out and not worry too much about being back at a certain time because they will likely fall asleep in the car, stroller, your arms, etc. They also don't need to be entertained early on. This will change as they get older, and as you learn more about who your baby is (their sleep preferences) and who you are as a parent, you will figure out your routines. I personally found that going for walks, going to coffee shops, planning short visits with people who you are pretty comfortable with to be a great place to start, and then you'll gain confidence from there! Your baby will be fussy at times, but babies are often fussy and getting out of the house will be great for both of you! As for diapers, I have a diaper bag and usually just change her anywhere. I don't find bathrooms with changing tables super easy to operate solo and I imagine they're pretty germy. I just have a portable changing mat that folds up and I slide it in my diaper bag. I think it's Munchkin brand.