There are multiple aspects to Leadership Development related to both the Board and Staff.
Resources
Nonprofit Board and Governance Issues
Five Tips That May Help Produce a Great Nonprofit Board- A very concise set of tips on things to consider in seeking board members. A good starting point for a young organization that doesn’t have experience in seeking and preparing new board members.
Board Development: How to Identify, Recruit, Orient and Assess Your Board- This article has a good view of many basic topics, as well as many links to additional resources on specific aspects of Board Development. (National Council of nonprofits)
CompassPoint Board Cafe- This is a newsletter for Board members, but will be of interest to nonprofit administrators as well. The articles cover the full range of issues that are relevant to capacity building, viewed from the perspective of a Board member. Each article (available from their archive) is meant to be readable over a cup of coffee.
A list of links to references on governance and board mechanics from a useful site with many other resources as well. (Creating the Future)
Board Diversity: A Bigger Issue Than You Think is an insightful look at the problem of trying to increase the diversity of the board but discovering that the tiny handful of names that you come up with to pursue are the same names that every board in town has on their wish list. This author argues that this is a symptom of a more significant, underlying problem. (Creating the Future)
Leadership Issues
The National Council on Nonprofits has an excellent annotated list of links on leadership.
A list of references on personnel matters ranging from executive transition to hiring to team-building. (Creating the Future)
Succession Planning for Nonprofit Organizations: A Resource List includes information about planning for succession of Presidents/Executive Directors and Board members. (Foundation Center)
An annotated bibliography of links on issues of interest to the leaders of non profit organizations. (Nonprofit Leadership Center of Tampa Bay)
The Free Management Library has materials that include an overview of leadership and supervisoral development (issues related to supervising the work of others).