How do you…
How would you…
Is fine for many contexts.
How does one…
How would one…
Is more formal and its precise meaning is closer to what you probably mean; you aren't asking how I or any other reader does something, you're asking how any person would, and so the indefinite personal pronoun one is appropriate.
However, some consider it stuffy. Also, if you aren't used to it, it can be easy to fall into hypercorrections where you use it where you, I or they are more appropriate.
How can I…
How could I…
You used it above, so it came naturally to you. It's what you really want to know with most SE questions; how you can do something. It works for both formal and informal registers, and so is appropriate for both professional and chatty cases, and SE which is a strange mixture of the two.
How to bake cookies?for example is ambiguous to me. – pure_code Feb 15 at 20:09