Looking for 60 Articles on Topics about SEO/Social Media/Web Design

Hello, I am looking for a freelancer to write topics related to SEO/Social Media/Web Design/PPC and other topics related to digital marketing. I will need someone that will be able to write no less than 500 words, and I will need 60 articles total. High quality articles are needed, so excellent english writing skills will be necessary (please attach related writing samples)! These articles will be submitted as guest posts on other blogs. I will provide the topics for you and the keyword. SEO knowledge will be helpful. Thank you!