To change the heading you need to create a child theme of Precious and then play with css to make it look like you want. – You can download the example child theme I’ve made to give you a starting point: http://wordpreciousss.org/themes/examples/

- there’s no harm in deleting the files you don’t need (eg. the .php files)

Help with basic css can be found on http://www.w3schools.com/css/default.asp

And I hope this was helpful for you, even if you’re a none-geek But it’s really no way around this solution.