I assume, but I might be mistaken, that most of the stars in the Sun's vicinity share similar orbits and therefore a lot of adjustment isn't necessary for point one.
Points two and three are kind of fun. If you "drop out of warp" far enough away from the star, a drive system like VASIMR or even ion thrusters should be enough to nudge into the proper orbit before you fall into the star or get flung back out to interstellar space. And the process of falling towards the star helps conserve fuel as you maneuver towards habitable planets.
Failing that, a good old NERVA engine should do the trick in an emergency.
Warp drive ... it's trickier than you think.