This is a growing collection of AH.com discussions on the topic of writing - not just alternate history, but also other related genres of literature or other media.
NOTE: Please do not resurrect long-dead discussions (i.e. dead for several years). It is against good conduct on the board. If the thread you found interesting is really, really old, you should rather start a new thread with the same topic or a similar topic, if you really want to discuss it. (Though you can link to the older, dead thread in the opening post of the new thread, if you want to. Just for completeness' sake.)
Why Science Fiction Detective Stories Aren't Impossible (article by Mark Cole at Clarke's World Magazine)
Sci-fi Worldbuilding Thread (defunct, start a new one)
Writing Excuses.com - A long-running blog about writing.
Writer's Ark - Discussion forum for writers and readers of speculative fiction.