It doesn’t matter if you are preparing a presentation, the cover of a book or a photo for your last blog entry. In many occasions, we need powerful images for our products, and they are not so easy to get.
To solve this problem I´ll list a selection of websites that collect great free photos that will help excel in your work. In addition, they are royalty-free, so you will be able to use them for commercial purposes:
Finally, remember that the photo is usually just half of the equation. You need to adapt it and unless you master photoshop, you probably will want to take a look to this other great tool.