Often times there are already good instructions or specs for something in the internet - on azing, wikipedia, youtube, blogs or supplier websites. Where possible, you should reference these. 
Examples
- Exact instructions how to click your wait through certain programs
 
- Introduction or training videos to a certain topic
 
- Explanations how something works
 
Problems with Reinventing / Redocumenting the Wheel
When you take that content and copy it for yourself, or just write it all over, this is usually time badly spent. 
Solutions to Re-Using Existing Content
- If it's an azing recipe which your users have access to, just link to that
 
- If it's an azing recipe to which your users don't have access to (maybe you have a limited access license), contact the author to increase your teams access
 
- If it's simply some background info (not needing checkboxes) and you find great content elsewhere - just link it