MSP430G2553: Help Setting up GPIO pins and Interrupts

Part Number:MSP430G2553

I was trying to set up one positive edge triggered interrupt and one timer interrupt, like SysTick on the TM4C123, but I have not found source code on how to set it up. I was also looking to have the positive edge trigger interrupt be based on one GPIO pin being an input, and the timer interrupt to control an output on a different GPIO pin. Are there any online instructions for setting up ports and timers? Do I also need to worry about setting up separate clocks or will the system clock suffice?

Thank you for your help!