There are 3 types of SEOTechniques
1. White hat SEO
2. Black hat SEO
3. Gray hat SEO

But,Google recommends white hat SEO. Every SEO begineer should prefer the white hat SEO..

SEO Techniques are

Article submission
Bookmarking submission
Directory submission
Images sharing
Video sharing
Info-graphics submission
Guest posting
Content posting
Forum profile creation
Blog submission

On page Techniques: Title, Meta Description, URL Structure, Sitemap.xml, Robots.txt, Heading tags, Alt txt, 404 error page, 301 Redirection etc.

Off page Techniques: Article submission, Blog submission, Classified submission, Local business listing, Images sharing, Video sharing, Info-graphics submission, Guest posting etc.

SEO techniques are classified into two broad categories: White Hat SEO - Techniques that search engines recommend as part of a good design. Black Hat SEO - Techniques that search engines do not approve and attempt to minimize the effect of. These techniques are also known as spamdexing.

In SEO Techniques are two Types:

1)On page SEO
2)Off page SEO

=>On Page SEO :

1)Google analytics
2)Google Webmaster
3)site map generation
4)meta data
5)meta description
6)meta keywords
7)robots code
8)url list

off page techniques:

1)reviews
2)social bookmarking
3)directory submision
4)classifieds
5)forum
6)business listing
7)Blog creation
8)Article submision
9)SMO

As the colors of the types of search engine optimization suggest, there are stark differences in the approach and long-term results of white hat and black hat search engine optimization. Though both types of SEO have their proponents, most companies/websites with long-term, stable, and sustainable goals will tend to stay away from the dark-colored variety.

White Hat SEO

White hat SEO utilizes techniques and methods to improve the search engine rankings of a website which don't run afoul of search engine (mainly Google) guidelines.

Black Hat SEO

Black Hat SEO exploits weaknesses in the search engine algorithms to obtain high rankings for a website. Such techniques and methods are in direct conflict with search engine guidelines.

On Page, Off Page

On page optimization
off page optimization

Two types of SEO techniques
On page
off page

Hello vashikaransutra,
Mainly there are 2 techniques of SEO, They are On-page SEO and off-page SEO.
On Page SEO:
1.Page Titles
2.Meta Descriptions
3.Meta Tags
4.URL Structure
5.Body Tags (H1, H2, H3, H4, etc.)
6.Keyword Density
7.Image SEO
8.Internal Linking
Off-page SEO:
1.Social Networking Sites
2.Blogging
3.Blog Marketing
4.Forum Marketing
5.Search Engine Submission
6.Directory Submission
7.Social Bookmarking
8.Photo Sharing
9.Business Reviews
10.Article Submission
11.Local Listings

Have a great day.
Regards.

Two Types of Techniques On Page Seo,Off Page Seo

SEO techniques are classified into two broad categories: White Hat SEO - Techniques that search engines recommend as part of a good design. Black Hat SEO - Techniques that search engines do not approve and attempt to minimize the effect of. These techniques are also known as spamdexing.

On Page SEO techniques are - Title tags, Meta tags, Keyword research, competitor analysis, Internal linking.
Off Page SEO technique are - Guest posting, Blog Submission, PPT Sharing, Blog commenting, Press Release

There are two types of techniques in SEO. They are

* On Page Techniques
* Off Page Techniques

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SEO techniques are classified into two broad categories: White Hat SEO - Techniques that search engines recommend as part of a good design. Black Hat SEO - Techniques that search engines do not approve and attempt to minimize the effect of. These techniques are also known as spamdexing.