Useful Tcl resources

A collection of useful resources to help you master Tcl

The #tcl IRC channel on irc.freenode.net. This IRC channel is inter-linked with a number of other IRC channels.
The Tcler's Wiki, a vast collection of resources gathered by Tcl programmers.
Stack Overflow can be used to search for your problem and see if it has been answered already. You can also ask and answer questions.
/r/tcl is the Tcl subreddit.
online documentation for Tcl commands.
The blog at magicsplat.com contains a series of tutorial articles for new features in Tcl 8.7