How to update Header-Footer & Content in SharePoint Sites

1: Login Into office 365

2: Open SharePoint Site

3: You will see an interface like

4: Click on Gear Icon

5: Select Change the Look

Options We have:

5.1 Theme

You can choose color scheme of your own choice

To update site logo and thumbnail

5.3 Navigation

5.4 Footer

Everything you enter in this footer menu it will reflect on

To edit site content, click on Edit,

To add link, images and additional information click on:

To add a new web part click on

It carries all the add-ons which you can use in your site