Hi, welcome, and good luck.
First thing might be to check the Arduino itself is good, by uploading the Blink sketch which is in the IDE under File, Examples. That will at least (hopefully) tell you that the upload is actually successful and that the Arduino itself is working.
Second, yep, uploading the code's always a good idea. Just paste into the screen where you type posts. But please then select the sketch text and hit the "#" button to give it code tags. The # is just above the
smilies. Code in tags will...
.... look like this.
Also a schematic of the circuit won't hurt. Nor will details of make and model of LCD.