If using the App, click HERE.
If using Mobile Web (not the app), click HERE
To find options like "Copy Post Link", "Hide This Post" and others, you have to expand the post options. To do this...
1. Log into your account and simply hover your mouse over the right-hand side of the post and a "down arrow" will appear.
2. Click on that "down arrow" to expand the post options.
Now that you know how to expand the post options, head over to the site and give it a try by clicking HERE.