Footer Questions

Hi, I want my footer to look like this, on the picture below:
Picture

1. How can I make title of the parts in footer, different color of the titles from widgets on my website. (since its same) how can i separate them?

2. How can I put the text below all 3 parts like on the picture?

3. How can i put social buttons in that part with the text, the social buttons are the same ones as in header, so i want same pictures on both places header and footer.

4. How can i add a picture of an arrow that will return the page to the top ?
where can i add that picture?