practice is the key, first try to fly (on an empty server)/singleplayer/local game. (supposing you don't have a joystic) keep pressing w almost all the time, use your mouse to get you up. Fly at a decent height, no need to fly 2 feet above tree level cause then you will not be able to bomb decent, fly high (200 feet is nice), dive towards a target, use your main gun first, release bombs and PULL UP back to 200 feet (or 400 if you like being in the fog). Just make sure you pull up soon enough, especially if you dive towards trees or a mountain.
But basicly you need to practice, you will soon get the hang of it, and we all crashed in the beginning, after a few houres you can fly and then you have to learn how to drop those bombs
For that drop them, pull up and use your rear view to see where they landed. try to remember when you released them and where they ended up, soon you'll be better and better
And always fly in bomb mode as you will see all ground targets that way. only switch to missiles if you chase a jet.
Hope this helped.