Luke wrote:I started cooking dinner five nights a week when I was fourteen, so I have a lot of experience under my belt. I say to not suck at cooking, the more experience the better. Try to cook at least five nights out of the week. Go to seriouseats.com or epicurious.com for inspiration.
For help in technique watch Julia Child and Jacques Pepin videos. America's test kitchen is also worth watching.
I'll second this. Cooking is very much a case of practice. You'll learn when things are done as you get more practice, as well as when you need to add a bit more of some ingredient.