First time single mom....

So I'm a first time mother with a dysfunctional family & a partner that wants nothing to do with his kid. Already difficult as hell, but I have good friends at least to support me. Honestly just trying to stock up on things I'll need soon and not stress myself. But I'd really like to hear some words of wisdom of advice from women who have an idea of where I'm coming from and things they wish someone told them before having a child. I'm nervous, I guess I'd just like to be prepared.