discuss Define some Off-Page SEO techniques?

The off page techniques are
1) Forums
2) Social bookmarking
3) Business listing
4) Classifieds
5) Blogs
6) Guest posting
7) Article submission
8) Blog commenting
9) Web 2.0
10) Press release

Following off-page Techniques:

1 Guest Posting
2 Article
3 Web2.0
4 Forum
5 Blog Commenting

1. Creating Shareable content- Creating amazing and shareable content is a smart way to generating more and more natural backlinks to our website or blog.
2. Influencer Outreach- If you have created any kind of content which is share worthy, then don’t hesitate to reach out influencers in your industry.
3.Contribute as Guest Author- There are a number of good and quality blogs that are open for guest post from various authors.
4. Social Media Engagement- Social media presence will help grow your business and also help you get more back links.

just google if u still not get it

The Off-page SEO techniques to increase the page rank in Search Engine(SERPs),

Social Bookmarking
Social Media Engagement
Forum Submission
Guest Posting
Blog Comments
Classifieds Submission
Document Creations

the most important "Off-Site" technique, you need to become very familiar/comfortable with is calling/meeting/interacting directly with customers & peers.

Everything is else is the technical s of getting these same people to recognize "your brand" when you want to call and speak with them.

IMO

Spamming forums that hide your signature link from Google with lists of tactics circa 2012 certainly isn't one I'd personally recommend ...

Some of the off page techniques I am mentioning below:
Forum submissions
Content posting
Bookmarking submission
Directory submission
Images sharing
Video sharing
Info-graphics submission
Guest posting
Question Answering
PPT sharing
PDF submission