Have you any experience of SEO. If yes so I don't think you will ask this kind of post here. Well, may I know what is online or offline from your side?
Your question says that you aren't much experienced in this topic, but if it can be of any help in your further SEO education, I would say BOTH.
First of all apply on page seo like meta, title, keywords etc than go for offline seo like social marketing, blog comment etc
Actually, I'm confused with your question Do you mean Onpage - Offpage SEO ? or Offline - Online Product Promotion ?
From my knowledge, i have came to know only about onpage and offpage optimization in search engine optimization. May i know what is meant by offline and online..??
Most impotent is on pages seo good for a websites because here panda, penguin, and freshness updated by Google. So You can check your off pages works and on pages.
hello Friend's..... SEO in both activity is useful on-page or off-page, we doing on page for Google crawling and off page for traffic and site popularity. So both activity is very important in SEO, but on page SEO is greater than to all.
its onpage or offpage and the onpage means that whatever alterations you do on your website that is alt tags,meta tags,titles,descriptiond and css while off page is directory,bookmarking,forum posting,blog commenting,article and various source to put your backlink.......is off page seo
On page and Off page SEO both are important. On page SEO Activity is Focus on Quality and Fresh Content. On page Including Content Optimization, Image Optimization, Meta Tags, Title, CSS, Heading Tag etc. Off Page SEO Activity is Focus on getting good, Quality links. Off page Including Directory Submission, Article Submission, Press Release Submission, Forum Posting, Bookmarking, etc.
Thanks a lot to all webmaster for their views...But Both Off Page and On Page Optimization are important for promotion of any website...we cannot ignore one things in terms of SEO..