Well you can go to one of your Online Chess games and then click the "Analyze" link and then go to the starting position where you are free to make any moves you want to explore.
Blank Analysis Board

try this one: http://www.chess.com/analysis-board-editor.html

If you click on the analysis board with one of your Live Games you can even choose to have legal moves or not!

try this one: http://www.chess.com/analysis-board-editor.html
That is simply brilliant. Why have I never stumbled over the big red flashing button screaming "analysis board" in the main interface?!
I've been looking for this some time ago. I really think it would help quite some people if it was easier to find :).
And btw, nice one on the site updates. This site keeps getting better!

try this one: http://www.chess.com/analysis-board-editor.html
hello how do i get to this link thru menu (green )

try this one: http://www.chess.com/analysis-board-editor.html
How would we access this without clicking the link (which tab is it under)

i think its new
the option was in preperation dont thinks its added in menu yet
Feature Request... "Free analysis board"
Member Points: 9519
coming soon to a Chess.com near you...
(seriously, we're ALMOST done with it) "

try this one: http://www.chess.com/analysis-board-editor.html
How would we access this without clicking the link (which tab is it under)
it's not totally ready for a place in the navigation yet :)
Can I access a blank analysis board anywhere in chess.com. I know I can do the game explorer, but I just want a simple (I make moves for black and white pieces) board. I'm sure it's on here somewhere.