Microsoft Word won't let me type anything because it says that modification
is not allowed becuse selection is locked. What can I do about it?
If you have a trial version of Office (typically pre-installed on a
new computer), it has expired and you'll have to buy a retail copy.
Or, if you already have a licensed copy, maybe you haven't activated
it. Click Office button > Word Options > Resources > Activate and see
what happens.
Or (unlikely) your template and/or document is protected. Click Review
Protect Document and, if the Stop Protection button appears at the
bottom of the Restrict Formatting adn Editing pane, click it.