How to electronically fill a PDF form/ add text/ recognize fields/ sign a signature using Adobe acrobat

1. Recognize boxes/fields to fill:
On the right panel, Tools -> Forms -> Edit
If  you are asked whether to detect form fields, click yes

2. Add/type texts:
On the right panel, Tools -> Content -> Add or edit text box
Then click onto the position you want to fill text and type

3. Sign your signature:

To sign:
Tools(on the right panel) -> Sign & Certify -> Apply Ink signature
Then you sign


To change the color:
Click on the signature -> right click -> properties -> click on the color box and choose your desired color