Need Improvement on current website owboosting.net as well as graphics for it

Hello! Today I am looking for an experienced web developer / graphics designer to help me out with my website! I have 0 knowledge of coding and would like tremendous help from a developer! But before I continue I will list exactly what I'm looking to improve with my website in a short summary: I would like for my website to be accessible 2 different ways, one as a buyer and the other as a booster (seller). I also want it to display how much it would cost to get to a certain SR EXACTLY (calculator pricing). This website here is a perfect example of what I'm looking for. [login to view URL] [login to view URL] I do want it as simple as that, but also a bit more organized, I want it to have a page called "boost orders" and a log in where my boosters would log in from. When a buyer purchases a boost, they will see it in a description and they are able to claim it, once they claim it a chat box can appear where both the buyer and seller can communicate with all the information about the boost, it's not as complicated as it sounds and i don't want much changed from my current website, just adding those features!