1. "Comment faire pour...": This is the most common and versatile way to say "how to". It literally means "how to do for...".
* Example: Comment faire pour apprendre le français? (How to learn French?)
2. "Comment..." + verb in infinitive: This is another common option, particularly if the action is simple or self-explanatory.
* Example: Comment ouvrir la porte? (How to open the door?)
3. "Comment on fait pour...": This is similar to "Comment faire pour..." and emphasizes "how" one does something.
* Example: Comment on fait pour faire un gâteau? (How does one make a cake?)
4. "La manière de..." + verb in infinitive: This means "the way to..." and emphasizes the method.
* Example: La manière de cuisiner un poulet (The way to cook a chicken)
5. "Comment s'y prendre pour...": This literally means "how to go about it for..." and implies a more complex process.
* Example: Comment s'y prendre pour organiser un voyage? (How to go about organizing a trip?)
The choice of which phrase to use depends on the context and the level of formality.