Tooltips offer the perfect solution to keep visitors engaged with your form, explaining each field and how to fill it out properly.
The Tooltipster plugin is totally free and one of the best around. It comes with a bunch of custom styles, positions, and animations that you can set for each field. You’ll find a live demo right on the Tooltipster website along with documentation and browser support.
Out of all the tooltip plugins available this is by far my favorite. It’s currently in version 4.0 with support for all HTML5 input fields. You can show tooltips when the user’s hovering a field, or clicking/selecting, or entering text or whatever you want.
You control the trigger point and Tooltipster does everything else