Pod and Pollen Parent Selection

[Salixx]

Alright folks, I know genetics are a messy business and don't always work the way we might intent, but here it goes.

I have found myself with a little more time on my hands than I am used to and I want to do something creative/productive with that time and that something is I want to actively attempt to grow some orchids from seed. I bought an cheap flask on eBay to practice deflasking and growing babes (babies, not attractive women) in the mean time.

Once I have selected two plants with which I would like to breed, I want to know how to pick which should be the pollen parent and which the pod parent. Which one typically has a stronger influence on color? flower shape, size and number of flowers? Which one has a stronger influence on how large the plant will be?

If someone has a link to a site or thread detailing this more, I'd be more than happy with that. I haven't turned up anything, but I might not be using correct terms or looking in the right places.

I appreciate any and all insight on the matter. Thanks!