One can talk with entities. If that is available it is often the most convenient method for exchanging information, getting questions answered and so forth. One simply asks questions to the entity and listens to what comes back. Don't worry about the logic of why the entity should be able to speak English, just assume that it will. You might get a clear voice, or the words might just materialize in your mind. Sometimes they really insist on speaking a foreign language so verbal communication will have limited use.
An entity might also answer in pictures. That can give just as much information, but might be a little unfamiliar. You can usually still talk to the entity in words and it will present a picture to you as an answer or response to what you are saying. Of course that works best if you ask questions that are easily answerable with a picture, i.e. they shouldn't be too abstract.
Feelings can also be a method. As a matter of fact, just about all entities communicate fine with feelings. The problem might be that our client isn't very much in touch with feelings and might not notice. Usually the feelings will be in the person's body, but they might also be external kinesthetic information. If only feelings are available it necessitates fairly simplistic communication without any abstract concepts.
Sometimes entities are not willing to communicate consciously with the person. That means, they are not willing to talk and answer anything. That doesn't mean we can't communicate, it just means we might do without the details. We will find out simply by asking, e.g.:
"Are you willing to communicate with me in consciousness?"
To be sure that we can get an answer to that, we of course need a communication system first.
Sometimes it is appropriate to start out with a simple Yes/No system before we go any further. That means setting up a system where we can ask a simple question that has an answer of either Yes/Positive/Agree/Like-It or No/Negative/Don't-Agree/Don't-Like-It. We just need to set up some kind of feedback that has at least two distinct recognizable states.
A feeling will often work for that. Maybe a relaxed feeling means Yes and a tight feeling means No. That is probably a body feeling, but it doesn't have to be, it can happen anywhere in space.
If you do this with a client you would say something like:
"Let's get a signal for Yes"
and then get the client to notice what it feels like, or what changes. Not think about it or rationalize it, but just feel what is there. And then you ask:
"Let's get a signal for No"
and you get her to notice what is different. If has to be something she is fairly confident of being able to detect, not just an idea.
If despite some coaching she still has no clue what she feels we can instead set up a piece of machinery to do it for us. For example you can train her fingers to give finger signals for Yes and No.
We can arbitrarily decide that the right index finger is Yes and the left index finger is No. We can ask the client which should be which. Then the facilitator tells the client that she will ask a few questions with Yes answers and she should deliberately lift the Yes finger each time. "Are you sitting in a chair?" etc. We do that until the finger seems to know that it is the Yes finger. The we ask some No questions and have her lift the No finger for each one. "Do you have a green cheese on your nose?", etc.
Then when we talk with an entity all the client needs to do is to notice which finger feels like moving. She shouldn't try doing anything logically, but should just notice which finger twitches a little and move that. The answers is likely to be totally contrary to what she would construct consciously, but that is the whole reason why this method is necessary.
The same thing can be accomplished with muscle testing, or with a pendulum or any other method that uses the involuntary movements of the body.