Basically SEO Divided into 2 types :
1. On-Page SEO
2.Off-Page SEO
Factors in On-Page SEO :
1.Meta tags (meta title, Meta description)
2. Heading Tags
3.Site Speed
4.Keyword Density
5. Keyword Prominence
6.Content
7.Url Structure
8.Image Optimization
9.Internal Linking
Factors in Off-Page SEO...