Quote Originally Posted by Sakai View Post
I have just started with pic's.
This is the key phrase right here. What have you done with PIC's so far? What have you done with MCU's in general? What do you really want to do with the '258? Storing a file is a very vague statement. There's a lot of ways to store a file, and a lot of places to store it.

I am using MPLAB IDE V7.30 and C programming
And you might want to find yourself a nice C forum to help you out with it all.