If you are completely new to the cockpit of a jet or even have some general idea, learning the details of a cockpit can make a huge difference and very exciting to fly what looks like a very complicated piece of machinery.
The aircraft used is the Boeing 777 by Precision Manuals. PMDG provides a very realistically modelled 777 aircraft add-on for flight simulators. The add-on is very detailed in how the systems interact and work in a real aircraft. Learning to fly the B777 will give you a good general insight about the airplane and will help you a lot in understanding complex cockpits if you are transitioning to jets. It will also help you better understand what's happening in all those awesome cockpit videos.
You can use a any simulator and a 777 model of your choice. I will be flying on Microsoft Flight Simulator X (Steam Version) also known as FSX in short.
The video will be a step by step guide covering all the relevant knobs and switches in the cockpit. There is also a Q&A section at the end of each lecture where you share your progress or ask any questions that you have. I will be happy to help. I hope you have an enjoyable experience.
Disclaimer: Not to be used for real world flight training. For the real world use relevant training manuals, standard operating procedures and consult appropriate rating instructors.