Step 2: Tune your A string down to G.
Step 3: Tune your D string down to C.
Step 4: Tune your G string down to F.
Step 5: Tune your B string up to C#.
Here are the suggested starting points for drop DB guitar tuning:
Low E: D1 (E string tuned down 2 whole steps)
A: G2 (A string tuned down 2 whole steps)
D: C3 (D string tuned down 2 whole steps)
G: F3 (G string tuned down 1 whole step)
B: C#4 (B string tuned up 1 half step)
You may need to further fine-tune the strings depending on your instrument and personal preferences. You can use a tuner to ensure accurate tuning.