Federal law requires lobbyists to register with Congress. But that registration is just a tip sheet of sorts to getting a full picture of how various corporations are attempting to move their agendas in Washington--or in state capitols where they might also register a lobbying team. We take a look at some of the tools and techniques to build out a fuller, more narrative picture of what lobbying looks like by tapping into various databases, websites and other spots. We also discuss how states require a varying level of reporting, from basic registration to disclosure of payments from clients and contributions to lawmakers. And we reverse engineer a few stories--to show how the information needed to get a lobbying story on page one came together.