When you are starting to create your first role play campaign, your players will always run off in a direction you never thought of. That means as the Storyteller/Games Master/Dungeon Master, you have to come up with a lot of on the spot information. Sometimes, that works. Usually, you get into a campaign breaking situation.
Roll & Play: The Game Master’s Tabletop Toolkit, will be great for building campaigns and tweaking random situations on the fly. And it’s now available on Kickstarter.