The user interface is intuitive, you can work with layers and have settings for different layers, including a multitude of modes for mixing one layer with another. There are a lot of effects included and many plugins available for free, since I have many plugins I got elsewhere I can't remember which are included by default. If all you want to do is simply crop an image, rotate it, make it black and white or add some minor effects, it will more than make that easy, if you want to remove a background, then the magic wand works very well too. It will suit most amateurs and probably some experts. For example, at the time of writing, there still is no blur brush for blurring the edges of pixels. There are advantages and disadvantages to the program depending on what you want to do.

I have been using it for quite some years, there are plenty of free addons for the program too.

The software itself is exceptional and will meet the needs of non professional users without any issues. Paintdotnet is completely free, so there is no point in being harsh in any way as people have gone to trouble of providing working software at no cost to the end user.

Paintnet online