I need help 🥺. Walk me through step by step like I’m a baby .. (OnlyFans)

I need help 🥺. Walk me through step by step like I’m a baby on how to make sure I have wi-if in the living room and a bedroom. I have a modem in the living room, what do I need to do for my signal to be extended to my bedroom? It’s nonexistent right now and I don’t know what to do 😓