How to Edit a PDF on Windows

PDF-XChange Editor

If you have a PDF and you want to edit it you can use PDF-XChange Editor which is one of the best programs around.  

Features

• View PDF pages and files
• Very fast to open files, no long loading times
• Edit any text in any PDF
• Convert scanned PDFs to text
• Add comments, annotations and markup  
• Type directly on any PDF page
• Export PDFs to many image formats
• Encrypt PDF files with a password
• Compress PDFs to a smaller size (pro version only)
• Edit paths and images (pro version only)
• Combine PDFs (pro version only)
• Move, add, delete, or crop pages (pro version only)
• Create PDF files from text or RTF (pro version only)
• Add digital signatures (pro version only)