Blog improvement

Hello, I'm looking to do the following on an existing wordpress blog: 1- Check and correct a bug on Google Chrome: when I open the page, I see 2 loggos (see attached screenshot) 4- Link website to Linkedin and remove other social medias in all pages where social media are displayed in the blog 5- Center the home page (the menu seems not centered ; currently there is more space on the left than right side) 6- Contact in the menu goes down depending of the browser + screen size (Safari Screen size Mac 13" + browsers of smartphone screen size) 7- Formating of the categories box in the home page : not all rows have the same size 8- Make the page Zero-waste in the menu clickable (same page as the page 0-waste in the categories box in home page) 9- Change the title of a page in the menu 10- Change colors of the arrows to go up in the page 11- Change colors grey of the titles of the articles + remove time of article publishing 12- Allow comment posts and likes without having to loggin (and remove loggin option) 13- Improve text features on wp because the current text formatting is very basic 14- Clean the back office with unecessary features 17 - When clicking on the logo in the menu, redirect to home page I will create several milestones and release payment only if the work is correctly done.