I found this forum when searching for How to Use IrfanView.
I'm in the process of writing a cute (what I think is cute, anyway) little Kindle eBook that is a combination children's story and Mini-Tutorial about how to size and insert images into a Kindle eBook.
I've been using Photoshop Elements, but I'd like to use IrfanView for the tutorial for the benefit of my Newbie readers.
If anyone needs help with publishing to the Amazon Kindle, feel free to ask... I can help with most subjects... or at least, get you started in the right direction.
Thanks... and I look forward to participating here!