Hello everyone! Today is my third day with Arduino. I'm a mechanical engineer who's making a project that's very electronics heavy (at least for me!). I have figured out how to drive a 4 wired bipolar stepper motor using Arduino and an L298N based driver. The next step requires me to pair a TFT display with my Arduino Mega 2560. The TFT I'm using can be seen at BuyDisplay .
I have the display (non-touch) with me but I don't even know if it works or not. I don't even know how to connect the display with my Arduino. Being an absolute beginner in electronics, programming and Arduino, I'm unable to find help to get this done. So I'm hoping I've come to the right place. 
All and any help would be greatly appreciated. Many thanks.
Your display requires 3.3V logic. All the interfacing information is on the BuyDisplay website.
I suggest that you should buy 3.5 inch Display + Adapter Shield
I do not have this display. The BuyDisplay site should have libraries and example code.
Ask if you need help.
Personally, I prefer to have a "Display Shield" i.e. one pcb that plugs into the Arduino.
David.
Thanks David for the very quick response.
I understand what a shield is, but I have been instructed to use this particular display specifically.
I was also able to find all relevant specification PDFs on the BuyDisplay website, but I am unable to comprehend most of it.
I don't think I'll be needing much help on the programming front, but more on the hardware interfacing front. I have no idea how to start!
Update: I was able to turn on the display by providing 3.3V. It would just light up for a few seconds and then turn off. So I am thinking that the display does work. Also looking at the specification PDFs from BuyDisplay's website, I can see that I need 74245 ICs to operate with Arduino's 5V power.
Apart from that, I haven't figured out anything. So all and any help would be greatly appreciated. Many thanks.