Aikidoka love to talk about aikido. As a consequence there is
an astonishing number of aikido web sites, email lists, and
books on aikido. To help orient you to the myriad styles of
aikido (yes, yes I know, they are all one ...), Stan Pranin's
overview of state of the political
world in aikido might help. If you are just wondering what
ki is all about then it might be worthwhile see what
the greats and near-greats have had to say on the matter.
Here are various philosophical musings that have caught my eye.
By and of Sensei