Need helpful SEO Optimized texts

Word Count: 500 words PROJECT DESCRIPTION: We need helpful texts for customers to talk about what we do, how we do it, and why we do it. Do you have experience in writing blog articles? I am currently building a blog section to my website. I need some interesting articles about how we do what do, that is SEO friendly We could write about all the benefits of purchasing used iPhones Do you know what is H1 H2 H3? Let"s say H1 is your main title, H2 is your subtitle and H3 is like the smaller title It's in SEO language Its what Google will crawl. H1 is your top priority title for Google, so in your H1, you have to put your most important keywords H1 H2 H3 are not my keywords. It's technical terms So what my SEO guy asking us to do, is to write a blog post about all the benefits of buying a used phone with H1 H2 H3 as follow: H1 Buy used iPhone H2 Buy used iPhones H3 Buy used iPhone online For those titles, you start with the keyword but you can add some AFTER to make a title that has sense H1 Buy used iPhone, Help Your wallet H2 Buy used iPhones and save the world NOTE: You'll have to come up with a proper title for the client keeping all the instructions in your mind. Also, if you can provide the strong keywords for H1 H2 and H3, that would be great. Budget : $10