Your biggest enemy is fear. It convolutes everything about the experiences. Just keep that in mind when you begin experiencing the 'new'. If you have a clear mind you can better discern if you are ready for particular experiences or not. It is not that you will get 'harmed' in the process of exploring these types of experiences...it is that you will change because of experiencing them.
I think it can be very easy to misinterpret intentions of entities while experiencing certain phenoms like OBE's ect. There is an immediate association with fear, but it is caused by the 'unknown' and is a natural response to the human body and psyche.
- Chad Adams