You can't have make turns with powered rails for turns you need to use normal rail tracks it should automatically turn it for u.
place the cart on a railroad track, then right click it.
The unscrambled word is waymen.A wayman is a railroad labourer who lays tracks.
Press f5
I think you mean "How do you get in a minecart in minecraft?". First, you place the minecart, preferably on minecart tracks, then just right click on it. If you are not on a powered rail, You need to push it first.
You need 6 iron ingots and 1 stick to make 16 tracks. Place them like this (I = iron, S = stick, E = empty): I E I I S I I E I