A Brief Intro:
Zapier enables you to automate tasks between other online apps (like Gmail, Evernote and Slack to name a few!). This helps you use complementary apps side-by-side!
The Nitty Gritty
First, you set up a Zap. A Zap is a blueprint for a task you want to do over and over. In words, a Zap looks like this:
"When I get a new thing in A, do this other thing in B."
The first part is the Trigger (“A”) and the second part is the Action (“B”).
Let's look an example Zap to expand a little further on this.
"When I ‘star’ an email, create a Thing in Allthings."
You get as much granularity as you need. You can pick what fields from the Trigger app should go to the Action app and you can use static text and custom fields too.
For instance, you might say that the phone number from your Wufoo form should be the work phone of your new Salesforce lead.
Then just let Zapier take care of the rest!
Zapier regularly checks your trigger for new data. When the Zap triggers, Zapier automatically performs your action for you.
Without any more effort from you, data flows from one app to the other!