I'm going to steal my own writings here. I explained circle casting in a Facebook group today, and I'm cutting and pasteing that here now. Enjoy!
circle is one way of creating sacred space for magic or ritual or
healing or whatever purpose. The 'typical' circle is a quarter-cast
one, using either the 4 directions or the 4 elements as part of the
structure. Details, as always, will depend on the magical group or
tradition one trains in. Generically - you can start in the East.
Using your finger, or an athame, or a wand, you ask for the power of
that direction or element to ward the circle and add it's power to your
working, then visualize a blue (usually) etheric flame pouring from it.
You visualize that line of flame going from that quarter to the next, as
you walk to the South. Repeat, asking that direction or element.
Repeat for the next two quarters, and after you invite the North or
Earth, continue the line of blue flame to the east again, completing the
circle. At that point, change the visualization of the blue flame from
a circle around you in one dimension to an orb around you in three
can get fancier. You can have altars at each of the directions. You
can draw pentagrams at each direction and open a gate for the power of
that direction to enter thru'. Etc.
you do the hoodoo you do in the circle, you take the circle down by
thanking the powers you invited and bidding them farewell. Some do this
in the reverse order that the powers were called in, some don't. Use
the same tool you used to cast to 'suck up' the energy of the blue flame
as you dismiss. And ground that tool afterwards (ground yourself if
you used your hand/finger, put the top of the tool to the earth if you
used a tool).
Here are the words to two sung quarter-castings by Isaac Bonewits http://www.neopagan.net/IB_Songs_WiccanRitual.html
The Calling, with the blue flame visualization, really is it for a simple circle casting.
The only tool needed is Knife/athame, or wand, or pointed finger.
Again, you can get fancier. And you're going to get better results the more intimate you are with the elements/elementals and the directions.