>>149463440 (OP)IDW is its own thing, not tied to any of the shows or movies. It's kind of a mix of a little bit of everything TMNT from the original Mirage stuff, to the 87 cartoon, to the Archie comics, and a bunch of other stuff.
/co/ repeats a lot of memes about which parts are good or bad, but the first 50 issues are generally agreed upon as being pretty good. The next 51-100 are going to be a mixed bag. The crossovers and mini-series and TMNT Universe comics are generally alright, and if you're reading them in collection form, you won't have to worry about reading order, which is notoriously bad otherwise.
Everything leading up to and including City at War is a fucking trainwreck. Everything afterwards is divisive, because the writers changed, but certain behind the scenes editorial stuff for a later big fucking event effectively screwed everything up for about 30 issues. 101 ownwards is usually called the Mutant Town arc and /co/ seethes about it, but it's... about on par with the rest of the run, for better and worse. Because there's a big impending event the story doesn't get to really go anywhere for 3 dozen fucking issues.
Then Armageddon Game happens. It fucking sucks. So bad, I'd almost say you should just skip it, if not for a few key events that happen. They nuke ex machina a big supernatural problem away, and nearly every character introduced in the arc fucks off right after. Everything following the arc is a wet fart.
The current relaunched run with Jason Aaron as the writer is somehow worse than everything mentioned above.
