Make my own server. {Gmod}

There is a from scratch guide on the community

https://steamcommunity.com/sharedfiles/filedetails/?id=179569412

Looks a bit complicated though :P

I'm wondering what the best ways over making a server are.

making? build it yourself home server -or- behind a hosting services server what OS to choose?

Is it expensive? or is there a way to do it on a personal computer.

that kinda answers the first question i have, you don't know which you want to do.. you have both those options, however depending on your internet entirely is how i would proceed.. if your on a really fast fiber connection then i see no reason why you couldn't just host from a personal computer and have people join.. however if you are on a basic high speed connection i would probably consider renting a Dedicated Server or a Virtual Private Server to host instead. several choices in both tbh.. i'd probably recommend finding a service that combines a cheap domain name with a VPS for a one time per year cheap charge (best cost effective).

Is there any way to get any profit?

not really. i mean you can ask for donations towards your hosting costs, but i doubt any true profits would come, if lucky then you might be able to have it cover the costs of the actual hosting. but even that's not guaranteed to happen.

What are the ways of creating my own server

i'm unfamiliar with gmod servers personally, but very familiar with steamcmd dedicated server setups. that page shows the basic configuration and startup to the ded server creation. -- modding and altering the server is upto how you want it done though, and idk gmod stuff so can't even give examples really.

Also, is there a way to ban the use of a certain weapon?

yes, idk how in gmod, but there will deff be a cfg somewhere that will disable them, or at least a mod of some type to disable selected weapons.