@Nicca you can have nodebb hosted by the nodebb team on their infraestructure if you aren't familiarized at all on command line or web installation.
Don't want to sound rude, but it seems that you don't have even tried to install it yourself and want the job done by another one, since you don't ask any specific question or doubt about the installation.
Since the guide explains each step and it's meaning it is kind of confusing that you say that "all commands are the problem".
If you follow the guide and ask for specific questions, i will be more than glad to help with the doubts. In other case, maybe someone here other than me would want to install it for you.