What are some helpful macbook pro forums. im brand new too mac

Question

i got a juiced up 15inch macbook pro.  im having problems opening a new folder inside my external hard drive.  im trying to manage the folders but the computer wont let me. i need help

Answer 1

This is from the Finders Help File:
To change permissions:
Select the disk, folder, or file and choose File > Get Info. In the Get Info window, if the Sharing & Permissions pane is not visible, click the disclosure triangle to show it.
If required, click the lock icon, and enter a name and password.If you are the owner of an item you will need to authenticate by entering an administrator name and password to change the owner or the “Apply to enclosed” option.If you are not the owner of the item a standard user can only make changes to existing permissions. An administrator name and password is required to add or delete users and groups, change owners, or apply permissions to enclosed items.
Select a user or group from the Name column.
To choose a permission for yourself or another user, select from the pop-up menus in the Privilege column:
Read & Write: Allows a user to open the item to see its contents and change it.
Read Only: Allows a user to open the item to see its contents, but not change the contents.
Write Only: Makes a folder into a drop box. Users can copy items to the drop box, but cannot open the drop box to see its contents. Only the owner of the drop box can open it to take out items.
No Access: Blocks all access to an item with “everyone else” selected in the Name column. Users that are specified can’t open the item, change its contents, or copy its contents.
Custom: If the permissions for an item is set to Custom, the permissions have been configured in a way that is more complex than is provided in the basic user settings.
To apply the same permissions to every item contained in the selected folder or disk, open the action button/popup and choose “Apply to enclosed items.”
To choose a different owner for the item, select the new owner in the Name column, and then open the Action menu (looks like a gear) and choose “Make ‘Name’ the owner.”
To add a user or group, click the Add button, below the list of accounts, and then select the user or group.
To remove a user or group, select the user or group, and then click the Remove button.