Landing can be trained on "practice", without the need of going online.
And try using about 80% sensibility on control settings, because at 100% it will be too hard to aim, and above 80 the responsiveness is too low (and dont use the virtual joystick, unless you are one of the 0,1% of players that are good using it - use accelerometer controls).
About bombing: when you are carring a bomb, your plane flies slower, and its turns are slower too - so, if you want to fly faster and don't need to bomb anything (obviously during Capture the Carrier and Dogfight missions), I suggest you to drop the bomb as soon as you take off (be carefull not to release the bomb too early, or your plane will boooom).
And last and more important advice: don't lose your time shooting MOMs. They come in two "flavors":
a) The MEAN ones, because you can not defeat them unless you play for years (so, go for other squadron aces);
b) The OLD MEN (like me), because they are people that can't see anything on the screen, their hands shakes, so they can't even fly straight; they crashes a lot and, so, they doesn't worth your effort or your bullets - you may even be destroyed by other players while trying to waste your bullets on their ever-smoking planes...
To put it short, the real good targets are 111th Falcons, Black Eagles, Enigma, NLR, Kamikases, Wardogs, etc. (Remember: don't shoot MOM!)
A little secret: MOM squadron have the unique power of destroying your account if they don't like you, so behave! Don't tell this anyone!