So me and a bunch of friends (6 all together) are wanting to try a tabletop roleplay. We decided on a post-apocalyptic scenario, similar to Fallout, and I am planning to use GURPS. I've written the general story and background and stuff, but in all honesty, I have no idea how to get this started. I read somewhere that someone used like 60-70 pages for their campaign notes, and I'm sitting here with 1-and-a-bit. For a first time DM, should I just find something that might suit our needs on the internet or should I just try and carry on with what I have.
I've got quite a few questions if anyone would be kind enough to help me, and I can email you what I have if need be.