To add an emoticon to your post, davidmelba, you simply press the ‘Go Advanced’ button and that will take you to the next page where a variety of emoticons are available to post. See the following two screenshots:
Adv01.jpg
Adv02.jpg
As regards liking a member’s post, that is even easier, all posts have a ‘Like’ button at the bottom left-hand corner of each post. See the following screenshot:
Like.jpg
And, Andy, all of the above screenshots were taken from my mobile/cell phone.
Hope this has been helpful.