Assuming your documents are PDF files or files that can be opened by an application installed on each user's computer...
Create a container field and place it on your layout.
Use Insert | File... to insert the file and choose the "by reference" option at the bottom of the dialog where you select the file to insert.
The file to be inserted should be on a drive that is mounted by all users if this is a shared solution over the LAN.
If you double click the container field, the file will open on your computer.
Since you want to attach a number of such documents, create a related table where each record contains one such container field and display these related records in a portal.
"if this is a shared solution over the LAN"
Want to access via iPad......included in db....???