When it comes to copying and pasting, you just copy the range(s) that you want and paste them into the target worksheet. If your required range starts at column C, begin your selection from column C.
When it comes to sorting, if you select a range and fire off the sort command, Excel will try to identify a header row. If it can't find one, it will prompt you to indicate if there is one or not. However, if you mean that you want one or more rows to remain at the top of the screen or one or more columns to remain on the left when the user scrolls down or right, you need to select the cell below and to the right of the edge of the row(s) and column(s) concerned, and then select Window -> Freeze panes.