Setup node js server on my CentOS dedicated server and write Hello world function

I have a dedicated server that works on CentOS (AWS [login to view URL]). I installed NodeJS there. My goal is calling a url "http://{public_ip_of_my_server}/helloWorld" in my browser and seeing a response "Hello World". The work should go on my comp through TeamViewer and I will record the screen during your session. All the work should be done through terminal. Because this is a student homework, my budget is 30 usd for all. Easy money for expert.