In reply to Alan Breck:
Hi,
If you're selling on here or a gear exchange forum you send the buyer your email address, the one linked to your paypal account. They send the money and then you withdraw it from your paypal balance on the website. You can also leave it there and use it to buy things via paypal instead.
If you're selling on ebay then it's linked to your paypal account and it automatically goes to your paypal balance when they pay. Then you either withdraw it, or not, depending on your choice.
If you're selling something by private arrangement, like on here or facebook, paypal goods and services is very much recommended rather than friends and family. The former has a small fee, but if you google Paypal fees calculator there are numerous ways to work out what that would be, but it protects you and the buyer from something going wrong. It's just a good habit to be into for online selling and buying. If using goods and services you can add a small amount onto the price you're asking for, to cover this. Check the calculator to find out how much.
Edit: also Paypal is very safe and trustworthy. I use it preferentially for buying online if I can, rather than inputting card details, because I've had money stolen through saving card details on websites.
Post edited at 09:51