Controlling Access to Lists
Lists inherit permissions from their parent site. You can restrict access to an entire list or to items within a list.
To restrict who has access to a list:
On the list toolbar, click Settings → List Settings, and click "Permissions for this list" under the Permissions and Management heading in the middle of the page. SharePoint displays the Permissions page.
Click Actions → Edit Permissions. SharePoint displays a warning that you are creating unique permissions.
Click OK to proceed. SharePoint changes the display of the Permissions page so that you can edit the permissions.
Select a user or group and click Actions → Remove User Permissions to remove access to the list for those users as shown in Figure 4-19.

Figure 4-19. Restricting access to a list
Figure 4-19 shows removing permissions for all users except the Administrator. That means only the Administrator can see the list; it is hidden from everyone else and if someone tries to access it, SharePoint displays an Error: Access Denied page (see Figure 4-20). Those two points confuse some folks:
In SharePoint, you generally can't see what you can't access. That means some lists, libraries, and sites may not appear on the Quick Launch or link bar for some users. That makes instructing users interesting sometimes!
The Access Denied page lets you sign in as a different user. Most folks have only one account, so that ...