The Rings
 

This has probably been brought up before, so if you could direct me to the appropriate thread where I can find some answeres....

What ever became of the Lesser Rings? How many were there, who wore them, what was their extent of power, and what became of them after the Downfall of Barad-dûr?

Here'a a link that will answer some of your questions: Of the Rings of Power

There were three rings given to the elves (Vilya, Narya, and nenya.) Gandalf wore Narya, Galadriel wore Nenya, and Elrond wore Vilya.
Nine rings were given to men.
Seven were given to the dwarf lords.
And then there was the One of course.

All of the lesser rings were bound to the One ruling ring, as Sauron had (more or less) a hand in their forging. When the Ruling ring was destroyed, the powers of the three waned. The Nine were destroyed with their Master, the majority of the seven were lost over the course of history, and the powers of the three would fade. This is also the reason for the elves leaving Middle-earth. Without the preservational powers of the three rings, the elven kingdoms would fade.

Sorry about any confusion....I didn't mean the *Great* Rings.

It goes on to say that the Great Rings made mortal bearers immortal, etc, so the Nine, Seven, and Three were not the lesser rings. In other words, there were many more. Those are the ones I'm curious about.

My mistake, I misread "Lesser" and interpreted as "Greater." Looks like my wit is sleepier than I thought. Unfortunately my knowledge on the lesser rings is lacking, sorry.

It sounds like they were pretty inconsequential. I doubt Tolkien ever wrote more about them than that bit you quoted.