Find Account Information and Redeem Codes on PSN Network

I am posting this because that website is so fucking unintuitive it takes me several minutes every time I visit to figure out what the hell is going on.

1. Sign on to your account at us.playstation.com
2. Click on "My Account"
3. Click the small text that says "Manage Sony Entertainment Network Account"
4. Sign in again on the page it takes you to

From there you have access to the following things 

1. Redeem Codes 
2. Add Funds to Wallet 
3. Manage your Sub Accounts 
4. View Your transaction history

Damn Sony, I really love my Vita, but make that website better.

To Add funds to the Sub Account
You actually just add funds to your account and set a limit on the Sub

How to Play Demos on PSP

The Easiest Way To Download A Demo and Play it for the PSP:
Go to:

http://mediago.sony.com/enu/introduction/

Here you will download Media Go For the PC
After you have downloaded it plug in your PSP. It may prompt for an update.

In the toolbar in the left corner click store and sign in with your PSN account.
On screen choose demos, select the demo you wish to download and it will appear in "download" on the left toolbar.
When it is finished downloading click the button at the bottom that says
Add to> PSP Memory Stick