To find your Lilith sign and house, you can use either the Black Moon Lilith or Dark Moon Lilith. The Black Moon Lilith is a point in space that is not an actual body, while the Dark Moon Lilith is a hypothetical point that represents the Moons farthest point from Earth. Here are some steps to find your Lilith sign and house:

1. Use a Lilith calculator to determine your Lilith sign. You can find a Lilith calculator on websites such as AstroStyle or Cafe Astrology. Enter your birth data to determine your Lilith sign in the zodiac signs.

2. Once you know your Lilith sign, you can find out which house it is in. In your natal chart, the sign and house where Lilith is placed show how the mysterious and karmic energy would manifest. You can use a birth chart calculator to generate your natal chart and find out which house your Lilith is in.

3. Interpret your Lilith sign and house placement. Your Lilith sign and house placement can show how sexually self-authorized you are, but also where you may get caught up in obsessive affairs. Your Lilith sign reveals your seductive powers and sensual nature. In your natal chart, where Lilith is by sign, house, and aspect is where you may have felt ashamed, shamed, ridiculed, stifled, deeply misunderstood, or repressed in some manner. Lilith provokes the darkest and dangerous emotions within us.

Remember that there are different Liliths in astrology, and the Black Moon Lilith is the most commonly known one.