Content for SEO site

I require approx 15 well written articles of about 200-300 words each for a new website related to SEO. All articles must be 100% origional-as they will be checked, must be very well written and must be written with on page seo for each topic in [login to view URL] must explain in simple straightforward terms their importance or uses as regards SEO to visitors without being too technical. All topics are very straightforward and general-examples will include: Article Creation Link Building Web Design E Commerce Websites etc.. Full list of topics can be provided on request. Previous experience in this field and detailing of sample work will be an advantage. Please also specify turnaround time for this task and your best quote. Payment will be made after I am 100% satisfied with the work.