I want to talk about lucid dreams and the steps to master it and what to do after being good at it , So if you can help please feel free to answer my questions

what are the most useful and powerful methods to master lucid dreams step by step ?

how long for practicing methods to have my first lucid dream and how long could I practice it to master lucid dreaming?

what can I do during lucid dreaming or after mastering it to achieve another skill that could be useful to me either after the lucid dream?