1) It requires a fair amount of skill with clairvoyant experiences to do this. Keep practicing and you may get there.

2) It's very common for people who are hanged, decapitated, or strangled in one life to have throat problems in the next life. Careful massage can help, but you'll probably have to deal with some difficulties there until the end of this incarnation.

3) That's what I would do. You can always ask the Source if there's anything else it would like you to do, and listen for the answer.