I'll try to answer the browsing on the internet one. Browsing the internet using the PSP is alright once you get used to inputting letters and the like, Example: If you want to input
www.google.com, you would have to put it in like a text message, you have to scroll to the letter you want and then press the R button to move the cursor and doing so deselects the current letter otherwise if you select another letter the previous letter will be deleted and the current letter will only be shown.
When accessing web pages it's easy because theres a cursor in the form of a hand and you can use the D pad to go right, left, up and down which will move the cursor to the links, you can't save pictures or anything though at least from what I have tried.
EDIT: You can also bookmark websites, and save them just like your favourites on a computer!
EDIT 2: Oh, wait you can save images, you have to press Triangle first then go to file and select Save Image.