Those sources were usually used only by professional designers with lots of knowledge and it was difficult for those who are not experts in this field to create an icon. Nowadays there are many ways for designers as well as designer enthusiasts to design an icon. With their help you can find an image that you like online and try to edit it in order to get an interesting icon. It is a small and very easy to use tool for icon editing, making, altering, searching and even exploring.
When designing your website, make sure your icons come in sets: they should have the same visual logic among them. Ideally, design png icon sets for your website following a palette, and stick to this range of colors throughout all the pages.
The iconion software offers the solution for your icon designing needs with the ability to convert scalable vector icons into one of customized images and designs.
Free download for Windows and Mac!