what are some best parenting books I can buy?

Znb • Ttc after MMC in May.
We are expecting our first baby in June. We will be first time parents and my husband and I would love to read some books on parenting. Im mainly concerned with books that are about good and effective discipline methods that are healthy for children. I've looked and can't make up my mind, if anyone knows a good book that we can buy we appreciate the help