Adding custom logo to replace header/title

Hello,

My website is https://www.inpursuitoftrout.com

I am running 4.2.2 and using theme “Store”. I’m looking to insert a custom logo where the block of “In Pursuit of Trout” is on the main page.

I tried adding custom logo through the theme option, but it enters as a header on subsequent pages, and is not static- it scrolls and blocks content.

Clearly I’m very new at all of this- any help? It is in jpeg format. I thank you for your patience and your help in advance.