[Q] First Nexus topic

So this is my first Nexus device. I'm coming from and S4 followed by a Note 3 so I'm kinda used to the samsung environment and don't want to screw anything up. I have a couple of questions.

First, if I root with CF-Auto Root, does the tool wipe all of the current data?

Second, how will rooting the phone affect the OTA updates and their availability?

Third, are the root apps already compatible with 5.0/Nexus 6?

Thank you!