I highly recommend you use a tablet or a computer to fully utilize this blog, if you have the option. There is an excellent search engine available on the sidebar, so you can search for any scripture story or church history figure, as well as other helpful links and pages. You can also leave comments and questions on those devices. These options are not available on the simplified phone app.
Use the links at the top of the page to find the appropriate lessons for Book of Mormon, Doctrine & Covenants, Old Testament, and New Testament, or use the search bar on the side. All four years are available, although the dates may not be current. Also, things may appear differently if you are using a phone, but the options should still be there.
By the way, if you are using a device that allows you to post a comment, please tell me where you teach. In the past, I've had comments from Afghanistan to Brazil to England to the Philippines and it's so fun to feel our world knit together in the love of the gospel of Jesus Christ!