Using your computer can go either way: it can help you be more environmentally friendly, or you can end up consuming more electricity than you should be. Computers are great, they’ve helped in many ways, but they also eat up electricity. The first thing you should do to be more energy-efficient is to use a laptop rather than a desktop. Laptops are more powerful than ever, with many laptops beating the specs of desktops. Use a laptop instead of a desktop, because it consumes less energy. Try to use your laptop battery when possible, and only charge it when necessary.
Next thing you should do is avoid printing. Print everything to PDF for your records, use an external hard drive for security, but avoid printing. Most paper does not end up being recycled, but you are also wasting ink by printing. Use the internet to shop, rather than drive and waste gas on shopping. You will save money on the commute this way.
See if your employer will let you work from home using your computer, because then you will save money from commuting and save gas, protecting the environment. When your computer is not in use, do not use a screensaver, set the computer to sleep or hibernate, you will save energy.
Rather than drive all the way to see someone for a conversation, invest in a webcam and use it. This will also save you money on commuting and save the environment from the gas your car produces. When you purchase a new computer, do not send it straight to the recycling agency. Look up computer recyclers, and send the computer to them. They will ensure that your computer is properly disposed of.