I don't need a guide for the main game but I'm looking for something where it tells where the side missions are located for each location. I'm about to head to China and I don't know if I can come back to Detroit after, but either way I'd like to complete all the side missions in Detroit before I move on to the next part of the game.

Yeah, you'll be back in Detroit, and you'll be back to China after you leave it for the first time as well. 
You can give this Guide a try, although it's the first one I've found, going through the entire guide is a drag as for each mission/sidequest you have to open a new page, and I'm not actually sure if it's finished.

If you need a guide for this game, that's really sad.
The game plops everything in your lap.

@Mike512: All the guides i had found are not finished yet and the guide @TheDudeOfGaming: posted seems to be the only one out there so far.

@kingzetta: I needed a guide to look for two people in the end game chapter. They didn't show up on the map and i was tired of looking for them. Though, the guides that were available weren't finished so i had to look for them on my own anyway.

@Mike512: All the guides i had found are not finished yet and the guide @TheDudeOfGaming: posted seems to be the only one out there so far.

@kingzetta: I needed a guide to look for two people in the end game chapter. They didn't show up on the map and i was tired of looking for them. Though, the guides that were available weren't finished so i had to look for them on my own anyway.