Pokémon Break! - The comic has a very weird start. You could skip to the 3rd chapter as the first 2 are based far ahead in the timeline. Good comic though, art style isn't the best but gets much better as it gets to the later chapters. Characters are good as well. Not PMD related but still a good comic to read. Updates are not in a schedule, they come out at random (~2-3 strips a week). I'm posting a link, because of some TCG issues.
http://pokemonbreak.smackjeeves.com/comics/641828/chapter-one/Gigi's Nuzlock Runss is a bunch of comics which are nuzlock adventures of different pokemon games. There is one for PMD: Sky and it looks very nice. The story is the same as Explorers of Sky but has tweaks to make it more interesting and funny. Really good read if you haven't played the game (if your reading this you've most likely have) or to get ready for PSMD. (Click on the chapters with an S at the start for PMD: Explorers of Sky. The ones with the E next to it are for Pokemon Emerald and W is for Pokemon White)
There's a few more that I know I am missing.