Powershell library

The way that I use a module for the functionality that I want to be able to use easily is that I have a directory named for my module, and the psm1 file of the same name it in it.  In my case, the directory is:
C:\Users\bchallis\Documents\WindowsPowerShell\Modules\PBCPSModule

and the file is called:
PBCPSModule.psm1

In my case the file contains instructions to load the files that make up the functionality that I want:
. $psScriptRoot\GeneralUtilities.ps1
. $psScriptRoot\CompareObjectOutput.ps1
. $psScriptRoot\GetDownloadQuotaLevel.ps1
. $psScriptRoot\GetFileSizesByType.ps1
. $psScriptRoot\ManageBCServices.ps1
. $psScriptRoot\NewPassword.ps1
. $psScriptRoot\SelectItemByAclEntry.ps1

the dot sourcing means load the file and keep the functions in memory.  That way I can keep major functions in their own files for ease of management.

The in my profile I use:
Import-Module PBCPSModule

PowerShell will look in the Module directories under the user hive and under the install directory for a directory called PBCPSModule and in there for the file PBCPSModule.psm1 which it will then execute.