I haven't read thru this all yet so I might be repeating ideas here (sorry!) def go second hand if you can. We got our crib set second hand it was actually still brand new but the lady I got from her aunt surprised her with already assembled....and she had already gotten one and assembled it. So she was stuck with 2 new cribs...so I bought the crib and changing table for $200!
I was all ready to buy maternity clothes in the regular stores until...well I didn't get big....I had my baby in Dec & I didn't even look remotely pregnant until on in September...so Goodwill and Thrift stores I bought lots of maternity clothes and yoga pants.
Something that saved my sanity was a Halo Baby Monitor that clips to the baby's diaper and detects movement for breathing....$80 best money ever got it on
amazon. Helped me sleep soooo much better.
We got a basic stroller/car seat combo and it's worked well. She outgrew the infant style car seat by 5 months old and was on to a convertible style. So glad we didn't spend a ton on a pricier option. We don't use the stroller a lot but it's held up well for walks at the park/mall.
Borrow anything you can from friends who have kids. Me & 2 others at my office have done that a lot as we each have a girl.