Bill_de wrote:
PhotoShop Elements is what you can buy and not rent. It should do everything you need, including layers. It runs about $60 now, as a newer version is due out. You don't need to buy a new version every year.
This should give you a good idea what to expect:
https://helpx.adobe.com/photoshop-elements/user-guide.html
Video Tutorials from Adobe
https://helpx.adobe.com/photoshop-elements/tutorials.html
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Elements does not work in 16 bit with all its features. Many of its tools only work in 8 bit.