While Sony's digital comics store for the PSP won't be launching until next month, that hasn't stopped the company from teaming with IDW to give away some free comics to tide you over. Free doesn't need a store!
The publisher is offering an issue of Star Trek: Year Four - The Enterprise Experiment, which you can get by visiting the regular ol' PlayStation Store and entering the following code:
Bam. Free comic. There are more codes for more comics (Transformers) being handed out on the PS Comics site and via Twitter, so those wanting to give the PSP comic reader a good workout, you know what to do.
Interestingly, it says the Star Trek offer is good only until December 16, giving you a fairly good indication of when the store is due to launch.