Yes, you can't do anything really on the PSN unless you have an account. The biggest reason is so you can register your Sony consoles to it, to allow them to access whatever PSN content you purchase.
You need an online connection for your PS3 and a PSN account with money in your Playstation wallet or a credit card matching your account information. Then you just purchase and download the games from the Playstation Store. It is a very common event and if you were to have a Playstation Plus account you would get a number of free games and new games every month
You need an internet connection and a Playstation Network Account if you mean the Playstation Store
To play PlayStation 3 games online you need a PSN account. To create a PSN account visit the official PlayStation website and go to the PlayStation Network section of the site. To play online also requires a broadband internet connection to your PS3 system.
There is no charge for a Playstation Network account except the optional PlayStation Plus Account for the Playstation Store free games, discounts, and other bonuses
Yes. PlayStation Network allows you to save your billing info (ie. a credit card) to your account, allowing you to buy games on the PlayStation Store on the PlayStation 3 and PlayStation Vita without the need for a prepaid card.
You need to make a sub account (child) and a master account (parent or guardian )
No, you shouldn't need to.
Yes, you need a PlayStation Network account so you can go to the PlayStation Store and download it. The download is free, and a PlayStation Network account is free. You will not even need to input a credit card number.
You can purchase games from the PlayStation Store and then Download and Play them if you have an internet connection and a PlayStation account.
No. Nobody has to pay for PlayStation 3 online services, such as PlayStation network and online play. Other services, such as Netflix, NHL, and PlayStation Plus each require separate subscriptions. A sub account is for people under 18 and will need to be under a PSN master account. You pay for Playstation Plus service which provides for free games and reduced prices on other games and also an automatic update program. Playstation plus provides extras and is not needed for online play
You must have a Internet connection to your PS3 and you must have a Playstation Network account. Online can mean more than just playing games and you are online already to be able to sign up to the account. To just be online means that the PS3 has an internet connection. To play games online and use the Playstation store or other PSN features you need to sign up for the account, which you could call a membership
to create a masters account you need to be 18 or older