how to create a fillable form in google docs

Yes you can create those forms easily ..See here www.alicekeeler.com/teachertech/2014/07/25/office-365-use-excel-survey-to-gather-information/

Here is a good resource for this:Create a fillable form

I'm not sure what you want, here. A data entry form, in which the values entered are transported to some other place on the worksheet, or maybe you want a form which pulls data FROM other places on the worksheet to produce a form suitable for printing or saving to a pdf. Until we know which (or maybe something else) we really can't go any further.

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A really easy (and FREE) way is using Open Office, an  open source alternative to Microsoft Office Suite.  It has an export to PDF option that I have found very useful. Here is a blurb from their website...OpenOffice.org 3 is the leading open-sourceoffice software suite for word processing,spreadsheets, presentations, graphics, databasesand more. It is available in many languages and works on all common computers. It stores all your data in an international open standard format and can also read and write files from other common office software packages. It can be downloaded and used completely free of charge for any purpose.  You can download it at http://download.openoffice.org/If you need any additional assistance, send me a message in my inbox.

You can create a Google Form from Google Drive.Using the new version of Drive:Go to http://drive.google.com.Click the red button labeled "New" on the left hand side of the page.Scroll down to the label that says "More"Select "Google Forms"Start building your form!Using the old version of Drive:Go to http://drive.google.com.Click the red button labeled "Create" on the left hand side of the page.Scroll down to the label that says "Google Forms"Start building your form!

1. Open it with Foxit PhantomPDF and choose Form Form Recognition Run Form Field Recognition . All fillable fields in the document will be recognized and highlighted.2. Add form fields from Form Form Fields click a type of form field button and the cursor changes to crosshair . And the Designer Assistant is selected automatically.3. All the corresponding type of form fields will be automatically named with the text near the form fields (Take the text fields for an example as below).4. Click the place you want to add the form field. To edit the form field further, please refer to the properties of different buttons from “Buttons”.

I have not compared programs, but you cannot go wrong with Adobe’s PDF Editor. I would not use anything else. (You also need to consider whom you’re sending it to, and most people would use Adobe Reader when opening PDFs.)