Is it a must to do a jailbreak thing? can I live without it? or is my ipad useless without all this jailbreak and cydia stuff?
Jailbreaking lets you install cracked apps, customize the UI, install third party apps (SMS/EMAIL, etc.)
It isnt a MUST. It's all dependent upon what you want to do. Do you want to have the freedom to customize your user experience? If so, you're probably best to follow a step by step guide written in plain english.