Also Bro, for just a little money for a LOT of functionality check out Acdsee Get the pro 6. Right now (HURRY) they are selling it for like $40 US which I think is like $35 Canadian nowadays
Anyhoo, it's pretty simple and straightforward but pro quality, fast and pretty easy to get started with. Provides, organizing tools, lightroom tools, editing tools, all in a pretty straightforward layout. No need for head banging on desk. I'm still an Adobe Chimp but I went ahead and installed Acdsee Pro 6 about three weeks ago on my laptop and was surprised at how good it is, some of their filters give me some pretty exciting and fresh results.
It attaches to the operating system. Open windows explorer (File manager); select one or multiple pics, right click and select "resize"; dialog asks for resize and if you want to rename or overwright, renames resized file in existing folder which you can then copy,paste,drag into an email.
Below is pic of dialog box when you right click on the image file in file manager. Easy Peasy...actually looks like part of Windows no adds no fuss. Free.
Gimp is cool, but not really all that user friendly, intuitive, nor quick. I found it lacks a lot of batch processing and renaming functions. Still though, if the learning curve isn't too bad for you it's a good way to go, you cannot beat the price anyway.