Here is another series of lessons that are all somewhat similar. If you don't find what you want here, try the previous two lessons's links. Chapter 45 can be accessed here.
"Laying a Foundation for the Millennium" by Elder LeGrand Richards Decmeber 1971- Discusses how our knowledge of the eternities can help prepare us now for the Millennium as we build a foundation like the temple.
"We Need Not Fear His Coming" by President Gordon B. Hinckley July 1982- Following basic gospel principles prepare us for the Millennium.
"When He Comes Again"- This is a link to the primary song. You can play the music or music and words.
"Salvation of Little Children" by Elder Bruce R. McConkie- This is more of Q&A and not all the questions relate to the millenium. However, it does answer some good questions that some might have with children in the millennium such as "Will children ever be tested?" or "Will children be married and live in the family unit?"
"Millennium"- in "True to the Faith" you can find this additional definition of the millennium. There ar also links to additional resources that you may find useful.