Finding or visiting a person/entity in the astral is done in a very automatic and instinctive way, generally-speaking. Robert Monroe described it as thinking of the person and the emotional-energetic "feel" that you have for them- he called this their energy-signature or their "ident", short for identity. I have found it to be really that simple, like thinking of an old friend or favorite relative. Fix that thought in your awareness and simply "intend" to go find them; Monroe did it by "stretching" his awareness towards them.
That is not to say that it works every time, especially early on. Sometimes I could find people straight away and other times I ran into characters who simply shrugged their shoulders and said, "Nope, haven't seen him here."
Other times, you can be pulled off course for reasons you won't be fully aware of, you just learn to sense the subtle course deviation being expected of you and you follow it, such as in my Grass, Gravel and an Old Friend experience. I went looking for one friend and instead was led to another.
When I do encounter an entity that I am unsure of- is this person who I expect them to be? Or are they a cleverly-disguised dream character offered up by my subconscious? Or are they another entity masquerading as someone else? Or did I inadvertently create a thought-form?...then I do what Kurt Leland calls his "entity trust test" and this is simply "reading" the entity and trusting your intuition. And this skill, like any other NP ability or sense needs to develop over time, as is the case with me; I'm not always confident in my answers just yet.
One early method I learned to distinguish between simple dream characters and what are likely consciously aware beings is to look closely into their eyes for definite signs of awareness/intelligence/Life! Dream characters early on have lifeless, unintelligent eyes...my very first encounters were with what were literally like showroom dummies. Over time, the dream characters became more sophisticated and life-like and honestly, now I am not always sure; by this time I find myself relying more on my intuition alone and my current provisional belief is that my experiences are probably peopled with both types.
You didn't mention just what it is that you "want to take things where they were left". My attitude has always been that whomever I may encounter, I treat them with respect and consideration, like being a guest in a foreign country.
Thanks, this helps a good deal.
The entity was a female character who had a mild crush on me and vice versa. The dream where she appeared was long and elaborate ( with a tremendous range of details which I could recall).For the most part the story was almost worldly in style. We were both treating each other with respect and consideration. On our plane what happened between us would be seen as a rather boring romantic story. Nothing physical. No prospects of anything other than a platonic relationship... Just nice thoughts and seeds of a possible astral form of romantic relationship.
Dawn put and end to all this.
My view of astral characters is to deal with them as I would on this plane of ours: with respect and consideration, as to me the Astral is us.
I had romantic feelings for this entity, feelings which are no different from what I would experience in the natural world.
I will try the Monroe approach and if it does not work (or if I happens to create a dream character) I will have to do more research. Thanks again.