Hi Guys,
I am joy and senior webmaster, we have a new site related to fashion and need login for access to site as like facebook, please let me know how to do seo work over this site, please suggest me how to start seo work for new site.

your suggestion would be greatly appreciated.

You need to optimize your website for both on page and off page factors
Here's SEO starter guide
http://static.googleusercontent.com/external_content/untrusted_dlcp/www.google.com/en//webmasters/docs/search-engine-optimization-starter-guide.pdf
Here's few off page techniques
- List in niche directories
- Submit your RSS feeds to feed directories
- Submit your website to social bookmarking sites
- Participate in social networking sites and related communities
- Post on online forums and niche related communities
- Write guest posts for related blogs to your niche.
- Write emails to other bloggers/ website owners in your niche offering them to guest post
I prefer forum posting since it keeps me updated with latest trends of SEO With "keyword country" as my partner, I am able to find niche related forums easily and it works for me.

First you must need to have knowledge about the SEO then after you can start the work.

I have mention some useful step:

1) Perform the Keyword research. you must have to use the fashion related keyword.
2) Write a quality and unique content for your new site.
3) Create a quality backlinks using the Forum posting, Social bookmarking, Blog commenting etc... 
4) Add in Google Webmaster tools, Verify your website, Submit your Sitemap to Google.
5) Add Google Analytics tracking code to your new website and check its working correctly.

First of all you have to do onpage of your site. Adjust meta tags and focus on targeted keywords.
Then come to offpage SEO.
Do directory submission,
Article submission,
Blog commenting,
Forum posting,
Social media and web 2.0,
Book marking.
Thanks

Hi, from the beginning you have to submit your site in the directories first, and then social bookmarking is also a good way to start a newbie site

few easy tips for link building
on page seo
original content
off page seo
Dofollow Blog commenting,
Dofollow Forum posting,
Dofollow directory submission,
Dofollow Article submission,

First of all your site must be SEO friendly like proper title, tag, description, h1 tag.
Do directory submission
Social networking and book marking

this are very important factor for site.

I completely agree with M.Rebecca answer and other SEO friends also stated clearly how to start of SEO with new website.

First you business analysis, website analysis and competitor analysis, select proper theme based keywords and do on page and off page optimization.

Basic steps to start seo for new website
1. Choose keywords wisely
2. find dedicated pages for your keywords
3. Create meta tags for each page
4. Update content if required
5. Create a sitemap and robot.txt
6. Image optimization
7. Create a blog if required
8. Create backlinks from trusted source

Registering your website URL with major search engine will be initial steps to start seo for new website. You can start on page and off page activities. List your website in the niche directory list. Create RSS feed. Search the keywords for the website. Start Forums, Social Bookmarking and in the on page activities create Meta tags and Title tags for the website.

so many specific answers here