Wanting to buy a house

By the time I'm 30 (2029) I want to be a home owner. I know I'm thinking way ahead of time and prices could dramatically change by then, but I'm trying to figure stuff out.

Say I found a place for 200k and I had 20k in savings. Would 10k be enough to put down? And how big of a loan would I have to get from the bank? Idk how this stuff works and I want to learn sooner rather than later

Bonus question: What is your monthly mortgage?