Difficulties centering the object on the middle of the screen I have some difficulties centering the object on the middle of the screen. Infact when I press the mouse wheel the view seems to fly away too fast. This is what happens : on the picture below you see that the object is too far,I don't see it clearly and I can't edit it :



instead,below you can see that happens when I scroll a little the mouse wheel : the object "disappear" totally.



I have also attached this video to explain better. thanks.
I have solved your problem by Centering the thing I want to look at in every angle. Go to top view [numbpad 7], drag things I want to look at to the centre of my view by holding [shift] and [mouse 3]. Do the same with view from the front and from the right/left. When that's done you should be able to interact with your thing perfetly. 

Another way to zoom in slowly is by holding [ctrl] nad dragging with [mouse3].

Yet another way to wiew you object is by using [shift]+[f] shortcut. This shortcut lets you use your WASD keys and mouse as if you were playing a videogame. With [Q] and [E] you can move up and down.