If you want to start getting leads from content creation without hiring a whole marketing team, Plezi is definitely the tool you should look into.
It's very easy to publish content, embed Plezi's forms on your website, track your visitors' behaviour through page scoring and automate all communications.
The Zapier integration also allows us to get a Slack notification whenever someone new requests a demo or downloads some content from our website which is really nice.
You can try Plezi one for free but the premium version is worth every penny.