saving for a baby

So my fiancé and I have been talking about  kids lately and how we can prepare for them before they come. We're getting married in February and are thinking of ttc in April and if all goes well we'll have our baby in 2018 so I was just wondering how could we start saving up now for a baby and how to be better prepared for it? Thank you so much for reading and I'm sorry it's a bit long!