Don't worry about it - do you know exactly how the speedo in your car works (if you don't it might surprise you). What you really need to know is the effect of your car's speed, or how to change it.
As a pilot, you do not need to know exactly how lift is produced, but you do need to know what is hot and what is not. For instance, the shape and texture of the wing is important, so snow or ice or even sometimes a light coating of water is bad. You also need to know the effect of flaps, angle of attack, speed etc, the exact mechanics of lift are more the interesting thing for Engineers.
If you really want to know, read the books Genghis suggests, if not, then see below:
Lift = MAGIC
I don't mean to sound patronising with that - I went to one of the Universities Genghis mentions above and learnt all about it, but still, to me, lift is magic (although I bear in mind all the important things you need to know).
The key is, that lift is very compleax and that different people have different mathematical models that work in certain regimes. But they are just that - models, or in other words inexact. Bernoulli works well at low speed in 'incompressible' and 'inviscid' flow (say up to Mach 0.3) for certain shapes for instance. It all falls apart as you get faster though, but still plays a little part in a lot of the maths. When you start talking turbulent, compressible, sonic, supersonic, hypersonic, extremely hot/cold, viscous or any combination of those, it gets really complex and no one on earth understands it (literally), although good aerodynamicists understand a lot more than me.