Default [Q] What's the best way to root?

Hi, i want to root my phone ( LB ) so i can make a TA backup and unlock my bootloader so i can try 4.4 kitkat, What is the best way to root my phone?

Sent from my C2105
Proud owner of a Sony Xperia Z

Previous phones:

Samsung galaxy mini 2 (S6500D) -> Sony Xperia L (C2105) -> Sony Xperia Z (C6603)

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Device: XZ C6603
Android version: 4.3
Rooted: Not yet!
Rom: Stock
Kernel: Stock
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