Search & Logo left side Display

Our Site : http://a2bwithab.com

– similar to https://theculturetrip.com/, over a search bar that remains at the top of the page. I would like to be able to update these images as necessary and change the length of displaying each image. I will use stock images.

– Want my home page logo to be in bigger size how to do it? other pages the logo are big, i want the same size.

– How to move the logo from centre to left side corner?

I want these 3 to be done not sure how to do… kindly help