These are the best Techniques of SEO

Off page SEO
1.Video creation & submission.
2.Web 2.0.
3.Microblogging.
4.Blog posting.
5.Social bookmarking.
6.Press release.
7.Info-graphics creation & submission.
8.Forum posting.
9.QnA.
10.Article submission.

On page SEO
1.Keyword research
2.Meta title and Meta description
3.Meta tags
4.Content upload
5.Sitemap generation
6.Robots.txt define
7. Title Tag
8.Meta Tag
9.Heating Tag
11.Descriptions
12.Sitemap.xml

Tools of SEO
1. Keyword research tool
2. Google Analytics
3. Google Webmaster
4. Google Adwords

Techniques are:
Forum
Directory submission
Image sharing
Article submission

Tools are:
Google Analytics
Google Webmaster tool
Keywords planner

Techniques of SEO
On page SEO technique
Quality Content
Title tag
Meta Description
Sitemap
Internal linking
Image Optimization
Headers tag
Update Content regularly

Off page SEO techniques
Micro blogging
Forum posting
Guest posting
QnA
Social bookmarking
Video sharing
PPT/PDF

SEO means how you promote your site in internet so there are two ways of tequniques that you can use
1 On Page SEO techniques
2 Off Page SEO techniques
There are many tools which help in SEO for better analysis which are given as below:
1. Google Analytics,
2. Google Webmaster,
3. Ahref,
4. Semrush,
5. Opensiteexplore,
6. Woorank,
7. Small Seo tool
and many more.