Newbie

So I bought a domain name, hosted it and bought a template. I thought that by buying a template that it would be fairly easy to customize but it turns out it’s not! It’s not drag n drop like I thought it was going to be. I’m not really sure where to go to learn what I need to do. I’d prefer to learn this than to find someone to do this for me but I’ve never build a site before. I appreciate any help and guidance I can find!