From: http://a-pdf.com/faq/how-to-combine-multiple-pdf-into-one-document-by-using-a-pdf-merger.htm. This article is about how to combine multiple PDF into one document by using A-PDF Merger? More see: http://a-pdf.com/merger/index.htm

2. Question:
I would like to share my measure PDF files to my
friends. But before that, I hope to combine multiple
PDFs into one document by using A-PDF Merger tool?
I have installed this tool to my PC. Can you tell me the
step-by-step tutorial?
Answer:
It’s my pleasure. A-PDF Merger is the simple to use
tool for you to merger multiple PDF files into one in a
few seconds. Except for that, you can also enhance
the security of combined PDF with safety password.
Let us see the below step-by-step tutorial:

3. Step1: Add all PDF files which you need to combine, custom
the order;

4. Step2: Select merger method: combine all pages of all PDF
into one or other;
Step3: Start to merger.

5. More see: www.a-pdf.com