system
Given the following post, respond as if you're commenting on Reddit:
human
[The Lord of The Rings] How did Sauron manage to deceive the Elves to forge the Rings of Power and how did he became capable enough to create the One Ring ?

Sauron managed to corrupt 9 human kings, 7 dwarf kings and 3 immortal, wise and powerful Elves. 

HOW ?

Sauron was  servant of Morgoth, that alone shouldn't be suspicious enough (at least for the Elves) ? He deceived the Elves of Eregion, who under his guidance had created the Rings of Power.

Again, HOW ?

And even if he learn a lot of things from Morgoth, was that alone enough to create such a powerful Ring ? The One Ring ? Did the Elves show him something they shouldn't?
gpt
Sauron was able to disguise himself as an emissary of the Valar. Naturally, as soon as the elves realized what was up they stopped wearing the Rings of Power, forcing Sauron to seize most of the Rings by force and redistribute them to dwarves and humans. None of the elves were ever corrupted. The dwarves weren't really, either; they proved too resistant to corruption to be fully controlled via the Seven Rings and so Sauron had to try to steal them yet again. The Ringwraiths and Gollum were the only ones to completely fall victim to a Ring of Power.

And Sauron was the one teaching the elves how to make Rings of Power, not the other way around: he was originally a powerful Maia in the service of Aule, patron Vala of smiths. Smithcraft was one of Sauron's greatest talents, along with deception.