Discover (Rediscover?) an image-manipulating tool that's been around for ages, but is especially suited to working within the .NET framework.
Articles Written by Peter Shaw
Because it's often easier to address pixels/cells directly than to use Windows Forms or something similar, it's very often simpler to manipulate raw pixel data directly.
"Meta Data" is simply information about the data in an image. Learn to manipulate that data from code.
If you've come to MVC from web forms, you might miss the drag & drop components you had available. Fear not; you can replace them with custom HTML helpers.
The .NET DateTime class is not just for getting the current date. It can help you do date calculations and much more.
Following what you learned in an earlier column, continue with the I/O theme and take a look at the functionality available in the "Directory" class.