I second what Harold says... and even if you feel you can't help the organization as a whole make much progress, you can not only learn but "meta-learn" -- figure out how you yourself learn better, and model that.

You may find yourself able to smuggle different kinds of learning (or aids to learning) under the label of "training." For instance, instead of "setting up a wiki," you create a "project support site" through which project members can exchange information, share progress, invite comments. So maybe the team gets some kind of formal training to start (as in a software package or in a soft skill area like working as a team), and the support site is how they build and sustain their abilities.