[diffuse_l]

I tried to repair a macbook air, and did manage to tear the microphone cable, because I didn't notice the connector :|

Like you said, you need to be careful, but you better be prepared to pay dearly (or manage without) for your mistakes...

[mh-]

Maybe I'm not adventurous enough, but I would never open an Apple product without a teardown video/instructions at hand. iFixit is a fantastic resource if they have covered your device previously.