Hello! Is there anything I could do to prepare myself for having a baby in the house? And any tips for a first timer around babies?

I'm 16 and my mum is 8 months pregnant, I'm an only child and my dad left when I was little so it's pretty much always been me and her. Her and her partner decided to have a baby, but then 3 months into the pregnancy he got freaked out and left. I seemed okay with the thought of having a baby around, but now I realised that all his share of looking after it is going to be left down to me!

I adore children but I know absolutely NOTHING about babies, I've never even held one! so does anyone have any advice?! I'm starting to get a little freaked out cause my mum's packed her labour bag and there's nappies and all baby stuff everywhere and I'm just here thinking 'oh shit what's it going to be like with a baby around what do I do?!' 😫😫😫