Problem with LCD NHD-0220D3Z NSW-BBW 16pin& LCD-0220D3Z-NSW-BBW-V1-I2C

Hi All,
recently I got an Arduino, I've gone trough the small things like the blinking LED's , Multiplexer and so...
Then I got 2 lcd displays...
With the 16pins I get to the blocks on the screen, but no text. With the 14 pins...I've got no clue how to connect,
cause the manual uses an other terminology ( because it's serial ?)
I think that the wiring is ok...redone it few times..I've got a feeling that I'm doing something wrong with the library data...
( I've tried on 2 computers, a Windows & and Mac )..
All input is appreciated...
Christophe

It is very hard to guess what may be wrong without seeing your code and how things are connected. Also you are expecting us to google your hardware to find out what you have. Makes a bit easier if you provide links or pictures. Which Arduino do you have?