You can add advisory notes as required between form elements. The element below is a simple text input box, but it's set as 'required' which means the form can't be submitted unless it is filled in.

The email input type will only accept text which conforms to the expected format of an email address. eg xxx@yyy.com

The 'tel' input type doesn't validate the field to ensure it's in a recognisable telephone format. There are too many variations like extension numbers etc. But what it does do is ensure the numeric keypad comes up when used on mobile phones.

You can add textarea boxes to allow the user to fill in large amounts of text.

The 'url' input type requires users to enter a full URL including http:// or https://

The select dropdown allows you to tailor the options a user can choose from.

The select dropdown can also be set up to allow multiple choices. On a desktop the user holds the Ctrl key to select more than one.

You can add a datepicker and/or a timepicker field.

The 'ranking' facility allows the user to indicated the options they prefer in order.

You can use a checkbox to confirm that someone has read your terms and conditions or agree to receive marketing.