You can edit a PDF using Adobe Acrobat XI software. Alternatively, convert the PDF into a Word file with Microsoft Word, edit the file in Word and then save it as a PDF.
Adobe Acrobat XI has built-in editing tools that are similar in function to other Adobe products, such as Photoshop and Illustrator. Once the PDF is loaded into Acrobat XI, select the Content Edition option under the tools menu to activate editing.
In Microsoft Word, first launch the program and open the PDF that needs to be edited. The PDF can be automatically converted into a Word document for easy editing. However, some minor formatting errors can occur, relating to line breaks. Use print preview to detect any formatting errors, and correct them before the document is saved as a PDF again.