How to write program for pic 18f 4550

[sribangaram]

Dear Friend's Till now I didn't write the program for uc Now I want to write the program so please give the suggestion
project Link :**broken link removed**

https://4.bp.blogspot.com/-5jvpRDLP...4oI/s640/PIC+18F4550+18F2550+USB+IO+board.jpg

I want to change like this
There is 6 An log In puts Ok............ I required ....... 1 AN LOG BAT VOLTAGE(DC VOLTAGE), 2 AN LOG ROOM TEMP, 3 AN LOG AC VOLTAGE(1), 4 AN LOG AC VOLTAGE(2), 5 AN LOG AC VOLTAGE(3), 6 AN LOG AC VOLTAGE(4) NEXT RB'0' to RB'7' AND RD'0' to RD'7' are Out put's Means 16 controllers and GSM MODEM(VISIONTEK GSM MODEM 82 GM) are ETHERNET connection for Remote controlling purpose :roll:

 

[ArNvC]

To start with, do something easy...https://newbiehack.com/MicrocontrollerWritingthefirstprogramandtransfer.aspx

or this one if you like https://www.lirtex.com/tutorials/beginners-guide-to-microchip-pic-programming/

 

[sribangaram]

Friend thanks to your Reply I will try to understand "how to write program"