iOS Can I read binary/text file on iPad?

I have a lot of (about 4000) binary stock data files on PC, now I want to make a iPad app to use those files, my questions as below:

1. Can I copy/move those files to iPad from PC at first

2. Can I read these files if I want to show a stock chart using data

3. Can I download a zip file from Internet, unzip it and update data files above

Thanks for your advise.

Thanks for your answer.
But on iPad, I don't know how to find the folder which I want to save my file, what can I do?

Can you tell me where I can find a simple source, so that I can use it as a base to develop my app?

I hope I can input something and browse it, then I can save it to file in binary format.