There are many ways to get people onto your list. Lead magnets are one such resource. For example, you can build ebooks, checklists and cheat sheets. But you can also do content upgrades, such as PDF versions of an article with added resources in them, four-part video training series, and more. Think about your audience and what you can offer them to better serve them, then treat them with some respect and you'll eventually reap the rewards.
The Field Agent app is available on Android and Apple devices. You only need to look for tasks within your area, do the research, submit the details of your findings and wait for your money. These tasks are simple and involve visiting stores and checking on issues such as display compliance, demos, and shelf availability. Each job may give you earnings between $3 to $12.