Tutorial: interplanetary warp

How to transfer to another planet using (Alcubierre) Warp Drive (Interstellar Mod) without expending a lot of dV on velocity changes.

Step 1. Equip Alcubierre drive and exit atmosphere.

Step 2. Calculate the velocity vector change-vector or dV-vector that is needed to match velocities with target planet using simple vector calculation (or just visually)*

Step 3. Warp close to a point, that is on a dV vector and near central star (as close as you dare)

Step 4. Wait for the gravity of the central star to change your initial velocity vector, into desired (final) velocity vector. Do not crash into the central star!

Step 5. Warp to target planet, and fine tune orbit as required.

• NOTES:
  

Getting to the proper region to perform the dV change can be hard without mod-help. If you have MechJeb 2 installed, to find the dV vector near the central star, you can use maneuver planner. Select match velocities with target after 0 sec. That will give the entire dV (vector) in terms of a maneuver node. Now position yourself using warp drive so, that the maneuver node is pointing directrly towards the central star (i.e. the bottom-most part of the nav-ball)
The closer you are to the central star, the harder will the gravitational pull be meaning the change in velocity will happen in a shorter time.