LCD-shield code for clock with RTC and crystal Oscillator

SO this is my first time working with arduino codes and i'm making a clock I have all the necessary parts needed. I'm using:

LCD-Shield 16x2
Ardunio Uno atmega328
RTC-circuit seriell clock
Oscillator CFPS-72B 4MHz.

What I need help with is how to build a code that gives my options to choose from showing it the time in number or letters. As well as showing the date-month and year.

Take things one at a time. Start with either the display or the clock chip.

Make sure you can get the LCD to display a simple static message such as 'Hello world'.

Next, use the display to echo input from your keyboard. I believe there's an example program for this.

Put the display aside and get the clock chip to show its information on your computer display.

Then get the display to show the information either or both of the formats that you are interested in.

Finally, put the two projects together to get the clock to display its information on the LCD.

Don