2012 saw quite a few changes in the digital world. Tablet sales exploded, cable subscribers declined, new kinds of scams and security threats appeared, online tracking got worse and all gadgets got even faster.

All through the year, I brought you tips to help you navigate all these changes. Here are the top 10 for 2012.

1. Avoid a tricky Facebook email scam - You get an email saying somebody posted something offensive on your Facebook page. Sounds plausible, right? Not so fast! It might be a scam. Read this tip to learn more.

2. Faster boot times - Has your computer slowed down over time? It seems like you could turn it on, go out for a bite and it still would be booting up! Here's how to speed it up again.

3. Protect your browser from tracking cookies - Ever get the feeling that someone is watching your every move? You're not paranoid; it's true! Google and others are tracking you online, but you can stop them with a little help from this tip.

4. Should you shut down your computer at night? - It's a debate that stretches back to the beginning of time: To shut down or not to shut down your computer, that is the question! I answer it once and for all in this must-read tip.