How can I create a fillable pdf form?

This is my first time using JotForm as well as creating a fillable PDF.  I know the data elements that should be included on my form (i.e. event planning and logistics); however, I am not sure if I should initially create a form in Word then convert to a PDF. 

Do you suggest that I create a form in MS Word first? 

If I understood your concern correctly, you are wondering if you can create a Fillable Form in JotForm or not.

You can create fillable pdf form in JotForm. Please follow the steps below:

1- Open Fillable-pdf-form-creator. Click "Create a Fillable PDF Form" button.

2- As you see in the image below you can choose one of these options according to your needs. Please check other options in this image. For my case, I choose first option. If you have no existing forms, you can start to create a new form in fillable PDF version like I did in my example.

3-  After you create your form, click the Download PDF as you see in the following image.

In other words, you don't need to create a form in MS Word, convert it to PDF and finally convert it to a fillable PDF Form. This process is so long and may be unnerving for you.

My recommendation is to use fillable-pdf-form-creator of JotForm as I mentioned above.

If you need any further assistance, please feel free to let me know.

Thank you.