Changing title font and colour

Hi there, I am fairly new to building websites but I love this theme, it's fantastic and I've been able to figure out most things by watching many tutorials and learning a lot along the way! However I am stuck and need a little help if someone doesn't mind. I would like to be able to change my title font and colour on the website as well as being able to change the hover colour. Right now when you hover over my posts it turns white and my background is white so it looks like it's disappearing and I would like to change it to a dark grey so it's still visible. I'd like the title to be bright white as well. My website is www.lastdayremnant.com Thank you to anyone who is able to help!