Help!!!

I have been on this DANG computer all day trying to figure out a couple of things to make my website a little more user friendly!  Since technology and I don't get along this is taking me a little bit!  So I have decided to cheat and get someone's lovely help!  This is what I am trying to figure out:
1.  A lot of you at the end of your post has 3 small pictures with the title; You might also like:  And then you can click on any 3 of the pictures and it takes you to that post.
(I thought I had it figured out, but then it didn't work?  Please help!)
2.  Also on the side of many blogs there is a picture that you have gotten from one of yur own posts, and it may be titled; Fall Decorations.  You can click on that picture and it will take you to all of your posts that have to do with Fall Decor. 
(I figured out how to do the one picture with the link, but I can not figure out how to get more links to work with that one picture.)
Thanks so much to anyone who knows how to do this and will take the time to help me!
Sincerly,
Computer Challenged