How can I create a time sheet form?

You can check our Form Templates for a Timesheet form. Here's a sample: https://www.jotform.com/form-templates/time-sheet

You can also create your own Timesheet form. First, please check the guide on how to create your first web form here in JotForm to get familiarized with our Form Builder. Here's a guide: https://www.jotform.com/help/2-How-to-Create-Your-First-Web-Form

Let us know if you need further assistance. 

If I create my own form for time sheets can I print and /or store online?
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You can print your form. Just select your print button then go to Advance and enable print.

Guide:https://www.jotform.com/help/24-Print-Button-on-Forms

Do you want to embed your form into a web page?

Guide:https://www.jotform.com/help/34-Adding-a-Form-to-a-Web-Page

Or do you want to store your submissions in your server?