I don't know HTML etc. Would this be a large limitation?
The XenForo team does offer an installation service for an additional fee if that might interest you.How about for general installation? Sorry, I do know this is a really nooby question.
I know general stuff like uploading FTP files. That tutorial doesn't seem difficult to follow either, thanks!You shouldn't need to know any coding languages in order to install the software, no.
Here is a link on how to install the software - Installation
Do you have experience in installing software? You can also get the Xenforo team to do it for you if you purchase the installation service but it really shouldn't be too difficult to do by yourself.