Hi there,
1, in Appearance > Elements edit the Element titled: Site Footer, the text is there.
NOTE: you can also see which elements are loaded on the page you’re viewing the Admin Bar > Elements menu.
2. in Appearance > Elements edit the Element titled: Archives. Its a content template, you can add remove edit any of the dynamic data items in that template.
3. edit the front page, select the Headline block inside that Query Loop, and in the settings > Dynamic Data set the Link Source to Single Post.
4. Forms – all plugins generally add some code to the site that will affect peformance, this came up recently from some of our GB users:
https://wordpress.org/plugins/ws-form/
And that one only loads its code where its needed.