Here is a link for results from a search of "personal revelation" on lds.org.
I like this list that Elder Oaks gave in 2004 about the 8 purposes of revelation:
For me, this explains how revelation has helped and continues to help me. Elder Cook gave a list about 7 ways to invite the Spirit.
Again, for me, these are ways that I receive revelation.
The why and the how are important. But more important to me is the what: Personal revelation is my direct lifeline to my Heavenly Father and my Savior. It has no obstacles or interruptions in it, unless I place them there myself. But a clear connection through my faith and obedience will allow for direct aid from the truest source.