Just making a general few comments, and I'm generally either a solo or couple practitioner with some group interactions....
Basic circle casting. Well, for me it's either an instant thing, or a lengthier ritual thing. Instant usually is as simple as mental imaging or turning around in a circle with intent.
Rituals involve much more materials and involvement. But in a very basic sense, I set up the four cardinal points, usually with candles in dishes representing the elements. Then I make circles from one point to the next, usually multiple times doing different things each time.
When I cast a circle, I go deosil, when I take down a circle I go widdershins.
As an aside- my love and I tried a spiral circle for the first time last Halloween, and we liked it. It's a bit different from what we usually do with basic circle casting. But we both agreed in the future if we do that again, it will have to be for an outdoor celebration- it was a bit cramped in the kitchen around our table to be doing much spiraling
Binding. There are different sorts of binding. There is of course the binding of one person to another, like weddings or birth blessings. And other person to person bindings, like love spells gone awry. It's a direct and full tying together of two or more. Like a piece of yarn wrapped around two hands, binding them together.
There is the binding of a person or thing, to prevent them from doing harm or stop from doing something. Though not exactly a direct tying together, it does leave a connection thread between the binder and the bound. A sort of fingerprint of contact. Like a piece of yarn wrapped around one hand, a piece of yarn between one hand and the other, and then the other hand wrapped in yarn too.
Then there is broken binding. It's binding two things separately and having no thread between. For when one is ready to let go or needs to set aside someone or something. Or you want to encourage another to do the same. Like if you are ready to let a relationship go or bury the hatchet with someone, wrap it up and set it aside. Like winding yarn up on each hand and then cutting the thread in between the hands, then taking the yard off the hands and putting them away.
Shamanism... I can't teach squat, but a person I have really learned a lot from is Seeker79.
Yes, I am a cynical and jaded jacknape. I try to see all three sides of the coin- do you?