My definition of a tulpa is a thought form that is semi sentient, has personality and is actively hallucinated onto your waking reality by your senses. If interested, go do your own research.
   Sorry to hear you're scared (although spirituality and enlightenment for you, as a concept, should also be scary). This is just normal for me. Some people, with little to no training, do have imaginary friends. See Leo's episode on crazy people and self bias. You might then be more open to these sorts of concepts.

I have a couple of suggestions:
To calm down for first trips, I recommend just searching youtube for relaxation/meditation music mixes. 
https://www.youtube.com/watch?v=0CYm6Gj_Qmw
  "Carbon-based lifeforms" has good mixes. 
https://www.youtube.com/watch?v=-9pgIVcB3rk
  "Man Of No Ego" with tapes of Osho and Watts in the mix.
https://www.youtube.com/watch?v=_J7csNwXm0Y
  Middle Eastern melody.
https://www.youtube.com/watch?v=w3Zg9G13Lt4
  Space ambient
https://www.youtube.com/watch?v=8wLwxmjrZj8
https://www.youtube.com/watch?v=MgApT3VHtZY
  Chillstep mix
https://www.youtube.com/watch?v=eLeIJtLebZk