In a recent interview conducted by freehackers.org, the hard working people behind the KDevelop IDE talk about the history of the project and their contributions. Light is also shed on the somewhat confusing set of branches that exist for KDevelop and the exciting features of the upcoming Gideon (a.k.a. KDevelop 3). The second part of this interview is due next week.
Take these two tutorials, if you want to learn how to use KParts components in KDE. The first in the series, Creating KParts components Part 1, covers read-only, read-write parts and network transparency.
Have you ever wondered who contributes what to KDE? The berliOS project attempts to answer this question with KDE CVS statistics, a site tallying every developer's contributions (translators are currently not included). With regular updates planned, you can find the latest summary here and also statistics for every CVS module.