To design a nice logo you need first to define which LOGO type you will produce:
LOGO types can be:
A simple symbol can represent the idea, such as the earth symbol for environmental purposes.
Use an iconic image relative to what you're selling or advertising.
Easiest type to design, use the brand name as the LOGO hero.
Combine between brand name and icons or symbols, generally used for kids businesses and for college students.
Highlight the letter that can give you the chance to convert to a simple image relative to the company business.