WARNING: Improper use of the sudo command could lead to data loss
or the deletion of important system files. Please double-check your
typing when using sudo. Type "man sudo" for more information.
To proceed, enter your password, or type Ctrl-C to abort.
***will not let me type a password or carry on to these steps:
In the editor, type UUID=, then paste the UUID number you copied from the clipboard. Type a Space, then type none ntfs rw. The final line should look like this: UUID=123-456-789 none ntfs rw, where 123-456-789 is the UUID you copied in the first step.
Repeat the above steps for any other NTFS drives/partitions you have.
Save the file and quit nano (Control-X, Y, Enter), then restart your system
If your OS X account is an Administrator account (and, I believe, by default they are unless you change them) then sudo should work. Have a look at this support article from Apple to see if it applies.
Enabling ntfs in OSX is fine, unless the disk you are trying to access is a windows system boot hard disk put in to a caddy from a system, some times OSX can scramble the permissions up, but normally with an external hard drive its ok.