How to Customize Color/Fonts

To Edit the color/fonts you can follow below instructions:

How to Edit Navigation Menus?

To Edit the navigation menu according to your needs follow the below instructions:

How to Edit Slider?

To Edit the slider at homepage according to your needs, follow the below instructions:

How to Enable Author BIO

First you need to make sure that you have filled your profile details on Blogger.com, i.e., uploading your profile image and filling up your information. Once you have done that follow below instructions to enable author bio on post pages