How do I get a picture from my phone onto my computer?

depends on the kind of phone you have. The most common way to do it though, is to connect your phone to the computer through a USB cable. Once your connected, find your phone on the in the windows explorer window (or by opening up my computer). Then, you'll have to look for a folder either called camera, digital camera or something else (you might have to look around for it). You'll find your pictures in there and you can easily transfer them to your computer from there.