AVR-Chat

i am new to avr and i want to use an lcd 2x16
 i use the portB as an output with 
RS--> B.0
R/W-->B.1
E-->B.2
AND I HAVE ALSO THE DATABITS OF LCD FROM (0-7) TO PORTC
ALSO 
lcdbit1-->+5V
lcdbit0--> gnd
i take temprature from adc and i put it in a variable t
also speed from encoder to a variable s
can you help me a little 
i want to know how it works the lcd
and an easy way to send the temprature & speed to the lcd and to see them
i have made alot of programs but they didnt work



      

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