Training in a broad range of computer related fields. Included is a section on the courses that Dan Margulis teaches, and several of his published articles in PDF format. There are many effective tools for optimizing images after you have had them scanned. Try dragging the top and bottom sliders in the a and b channels in lab inward a little bit to get some punch back in the images. This is very similar to increasing the saturation, but it gives options not available with the saturation setting.
Problems can come about from operator intervention when scanning.
You should specify when having them scanned that you want no operator intervention, scene balance algorithm turned off, and use universal film terms. I can assure you this is so from personal experience. These operators will be busy tweaking each individual image thinking this one is a wee bit too blue, this one too yellow, etc. If you are less than an advanced expert you will find it a necessity to get acquainted with color management in Photoshop 5 before using it. Otherwise it will totally change the colors of images you save.