Of you want specialized SEO, the off-page SEO, you will need to search someone else, preferably an expert or a company that will push your website on the first page on search results using Google, Bing or Tor. But for the moment iti's good to know that whoever is building your website that persond should do it as fast loading it's possible (that partial depends of how busy is the web server in that specific testing time or how good is the internet connection for the web server). It is good to know that you should use only one h1 (header 1), for the title, but you can use how many h2, h3 and so on you want depending how many sections (h2) are in the article, how many chapters (h3) are in the text and so on.
And if you are writing very often on your website (it's good to have a blog on it in order to add as many articles / posts you can) it's better to write as often and interesting you can write about the things you like or you love like writing science-fiction literature or sports like kendo, you should analyze your ideas and set your keywords before you start writing. If you can write daily or even a few times a day every day it's even better. And if you post the links on social networks and you have many contacts there you will send to your website many additional people to your website that you may not come using the search engines.
They are all part of Search Engine Optimization (SEO). An expert can give you the detailed list with the items that are part of that SEO while that person is optimizing your website adding many of a huge number of links (natural backlinks) to it. Why natural? Because the people who are writing / posting on their websites are using all kind of words in their post or pages while they are connecting those words and your website (they are adding links under those words to your website). If you are creating links to it and you keep using the same word or words and the same post or page on your website and the same link the algorithms behind the search engines will realize that it is something artificial in the whole situation and they will ignore the links or they will lower your website (they will decrease its rank, they will put it on another page of the search engine results or they will ban its appearance. The decision is theirs.).
And we don't optimize websites for search engines (SEO) only for people in Oradea Bihor România. We are doing on-page SEO for the websites we are deisgning in Oradea Bihor România for the entire country, for the entire continent and for all the people wanting to have one wherever they are, even when they are in Oradea, Bihor, Romania, Europe or another continent. It is important that the client's requirement to be kristal clear and to be realistique (that we should be able to add what the client wants on page).