Did I require any prior information about for AWS Cloud Practitioner?

No, there are no prerequisites to prepare and take this certification exam.
No Degree or Experience is required.

Did it is going to help in my career?

Serves as an entry point to a cloud career for candidates from non-IT backgrounds switching to cloud.
Job listings requiring AWS Certified Cloud Practitioner have increased 84% (Oct 2021 - Sept 2022) per Lightcast™ October 2022.
Once you earn one AWS Certification, you get 50% discount on other AWS Certification exams.

Exam Overview

| Category | Foundational | |---|---| Exam duration | 90 minutes| Exam format | 65 questions; either multiple choice or multiple response | Cost | 100 USD. Visit Exam pricing for additional cost information, including foreign exchange rates | Test | in-person or online Pearson VUE testing center or online proctored exam | Languages offered | English, Japanese, Korean, Simplified Chinese, Traditional Chinese, Bahasa (Indonesian), Spanish (Spain), Spanish (Latin America), French (France), German, Italian, and Portuguese (Brazil) | Valid For | 3 Years|

How to prepare for AWS Cloud Practitioner?

Mandatory, but more than enough to Pass Successfully (Free):

Read AWS Whitepaper. [IMPORTANT]
Read AWS Glossary.
Read about Shared Responsibility Model
Do Official AWS Cloud Practioner Official Practice Set.
AWS Cloud Essentials Course
Practice Questions on ExamTopics. [IMPORTANT]
Practice Questions (Old Set, but don't dare to ignore) on ExamTopics.

Optional(Some suggestions may be Paid):

Read about Exam Prep Official Pretest: AWS Certified Cloud Practitioner (CLF-C02 – English)
Read about Official Practice Test: AWS Certified Cloud Practitioner (CLF-C02 – English)
Follow Course of Stephane Mareek
Follow Course of Neal Davis

How to Validate AWS Cloud Practitioner for more than or after 3 Years?

Before your certification expires, you have to recertify through one of the options below:

Complete the new AWS Cloud Quest: Recertify Cloud Practitioner game-based learning. This guided, self-paced option is free during the beta period November 21, 2023 – May 31, 2024. No exam prep or exam is needed for this game-based recertification option.
Pass the latest version of the AWS Certified Cloud Practitioner exam
Pass an Associate-level or Professional-level exam

What to do next after AWS Cloud Practitioner

AWS Certified Solutions Architect – Associate, if you want to become Solutions Architect.
AWS Certified Developer – Associate, if you want to become Cloud Engineer or Developer, and
AWS Certified SysOps Administrator – Associate, if you want to become systems administrator.

Personal Experience and Some Hard Takes

Personally, I feel this certification is ideal for line-of-business employees (sales, product management, project management, etc.) who want to gain cloud literacy and communicate more effectively with technical teams and customers.
If you are from Technical background, I suggest you to go directly with AWS Solutions Architect Associate Exam, as AWS Cloud Practitioner is not going to help you in real world.

How to Prepare for AWS Cloud Practitioner?