Mobile hotspot/tethering noob questions. topic

Im using my verizon S5 on t-mobile, I'm rooted and on optimal rom. Okay so Its my first time trying to use my phone as a hotspot for other devices to connect to. I was following some instructions online for how to set it up, seemed like it went well. I had my other devices connect to it, said they were connected and was all good. Then when I tried to get to the Internet on the devices they had no Internet access. Anyone have a good how to guide on this? Thanks alot

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