There are various solution to this questions like these but I will attempt to answer the problems that I encountered with there working solution that either I found or created by my own.

Question 1: My initial problem was how to read multiple .CSV files and store them into a single data frame.

Solution: Use a lapply() function and rbind(). One of the working R code I found here provided by Hadley.

The code is;

# The following code reads multiple csv files into a single data frame
load_data <- function(path) 
{ 
 		files <- dir(path, pattern = '\\*.csv', full.names = TRUE)
 		tables <- lapply(files, read.csv)
 		do.call(rbind, tables)
}

And then use the function like

> load_data("D://User//Temp")