guys what is link building , what are the best practice or ways to do it, hope you can help me guys thanks
Link building is the off-page factor of SEO... Examples of link building forum postings (with signatures attached), join and submit to social bookmarking sites like digg, propeller.com (previously netscape), reddit and more, directories submissions, blogging, etc....
The best way is to write interesting content that people will link to you. You can consider implementing some tools for free usage
Well said KC_TAN. Great content will win out in the end (ah the old cliche) This will build up links more organically and Google loves that Another technique is to link out to other relevant sites. Eventually they'll see you linking to them and its very likely they'll reward you with a link back. Good luck!
Link building is a method where you request, submit or just put links in other sites in any method like directory submissions, link exchange, links in forum signatures, links in blog comments.