why cant i find link among the widgets and how can i get one
I’m not sure what you mean – can you explain more?
why is my site not visible on search engine?
How do you know it’s not visible? Are you using an SEO plugin?
in setting widget i was told i would choose link and some others,but link isnt there. and yes am using SEO plugin
I’m still not clear on what you are asking – but general info about widgets:
http://codex.wordpress.org/WordPress_Widgets
If you are asking about adding links, maybe this:
http://wordpress.org/plugins/link-manager/
If you want to add a link to a widget, you can add the HTML code for a link –
http://www.w3schools.com/tags/tag_a.asp