If you've come across a file with the .bz2 extension or a .tar.bz2, you may be wondering what it is and whether it's safe to open. The bz2 format is a less usual type of compression, so it's understandable that you might not have anticipated getting a file in this format.

Painted rocks look fun - they're a beautiful yet not overly serious looking craft. But you might be wondering what you can do with your painted rocks. They're neat, so it's easy to accumulate more than you had intended of these when you wind up buying painted rocks for sale, or when a friend gives you a painted rock as a gift, or maybe you're an artist yourself who has generated quite a collection of your own rock art.

Here are plenty of options for how to use painted rocks.

Microsoft Excel is a pretty good spreadsheet and graphing program, but its subscription can be costly. If that's a concern for you, there's a solution: there are several free, legal Excel alternatives which can read and write files in Excel format. This means that if you have existing Excel files, there's no worries - these free spreadsheet programs still work with your existing Excel files.

If a friend only wants to hang out in groups, you might be wondering what this means. Here are the various possibilities.

If you own a seasoned cast iron skillet or pan, rest assured it is possible to scrub it - but you need to be careful about how that's done. Never use detergent or harsh scrubbing pads on a seasoned skillet because it will destroy the seasoning. Seasoning refers to the oil that was added onto the skillet by the manufacturer after making it. The seasoning is all about making it easier to clean. It would be even more difficult to clean cast iron after cooking if it was not seasoned or if the seasoning was destroyed.

Rest assured, it is possible to clean a cast iron skillet with burnt on. It looks like a daunting task but it can be done when you follow these steps.

The Firefox browser is able to fill out forms for you automatically, including your passwords. This illustrated tutorial shows you how to set up autofill for Firefox. We also explain the risks of autofill and when you should and shouldn't use it.