If you don't have installed program for editing PDF documents on your computer, then you can use web application PDFescape which allows you to edit your documents in your browser.
Submitting tutorials to Dreevoo.com is simple and can be done real quick. Here is a tutorial to show you how easy it really is to submit a software related tutorial, plus you get paid.
TinEye is a great reverse image search online service, that can tell you where an image came from, find different sizes of the image and you can find out if someone is using your image without your permission.
Often in PHP you want the same block of code to run over and over again and instead of adding several almost equal lines, you can use loops to perform this task much easier.
If you don't want others to use your photos and images without your permission, you can create a so called custom watermark with your name or any other text you want.
If you can't copy files that are bigger than 2 or 4 GB, usually HD movies and such, on to your USB key, it's usually due to the file system the USB key is formatted to.
