1. Open a PDF merging tool on your computer. There are desktop applications and online tools available.
2. Select the two PDF files you want to merge. Usually, you can drag and drop the files or click on a button to add them.
3. Some merging tools allow you to rearrange the order of the pages or add more PDF files.
4. Click on "Merge" or "Combine" button. The merging process may take a few seconds to complete.
5. Save and open the merged PDF document to verify.
Using Adobe Acrobat:
(If you have Adobe Acrobat Pro)
1. Open the first PDF file in Adobe Acrobat.
2. Go to the "Tools" menu and select "Insert Pages."
3. Browse to the folder containing the second PDF and select the file you want to merge. You can set it to be inserted before or after the current document.
4. Click on the "Insert" button to add it.
5. Save the merged document by going to "File > Save As."
Please note that the specific steps may vary depending on the PDF merging tool or Adobe Acrobat version you're using.