First click on the reply box where you would type your words so that you get a blinking curser there. Then click on the "insert hyper link" icon which is the second icon on the message reply box below. A window will pop up. The first line will say "Link Type: Hyper Link". Leave that alone. The next line will say "Address: http://" then a blank box then "Preview". Paste the address you want to link to in the blank box. Don't put anything in the next line that says "Preview:" and then a large square box. Click on the OK button. I'm not a puter expert and don't know the correct terms but I hope this helps.

If you click on the word reply on the corner of each post there will be more options like the ability to post a video or picture.