Main Menu and Social Media

Hi everybody,

I read most of the posts but didn’t find the right answer! So hope to find it here.

1- I need to put social media share widget and search option in main header, exactly like this:

2- I need to change arrow codes in post page but can’t find the right place to change it.

3- I need to have a blog page and a news page, how can I solve this problem?

Thank you in advance.