Resize pics for print or online?

I am using a canon rebel and the pictures are huge. I am trying to figure out how I resize the pictures and still keep the quality and resolution? I have searched everywhere and I guess I am just not understanding. I do not understand the HUGE numbers 3888x2500? how does that translate when I want to still keep the quality of my pictures? when I want to print them - I have to change the dpi from 72 to 300 - or like - I am trying to do a clip in windows movie maker - but the pictures look blurry - they don't look blurry when I just look at them on my computer?Resize pics for print or online?
With this software http://imageconverterplus.com/ you can set all the desired parameters when you resize your images. Maybe this link will be helpful: http://imageconverterplus.com/help-cente With Canon Rebel you might be dealing with RAW format - it means you'd better convert your photos to JPEG files which I think you can also do with this software. RAW files are always huge. But even if your files are JPEG files, just set the parameters you want, and I think some of the common profiles will be already included in the program. And one more link I found for you: this is how to prepare your images for print: http://www.imageconverterplus.com/help-cResize pics for print or online?
try and change the image resolution to be the same one as the movie you are making.that should work. and play around with the movie export settings in movie maker.
Try to use this picture resizing tool http://www.softorbits.com/batch_picture_ It works well!