35 years ago. It doesn't seem that long ago. I do remember the stress of wanting to impress my new employer with my abilities and work ethic.
If I may, I'd like to offer some insight and advice.
Become familiar with, read, and follow the requirements of all the manuals that are pertinent to your tasks.
Do conscientious, good quality work that you are proud to put your name on. I was told early on that it is better to do a good job once than to do a bad job quickly that has to be done over.
There is a full spectrum of individuals at a place this big. Every day I see people that I have never seen before that have worked here for a long time. There a people of good and bad character in management and on the floor. I would have to say much more good than bad. I have been blessed to work with many great people.
The best managers and supervisors are the ones that give you the support, supplies, and tools to do your job. Then there are ones that expect you to do miracles with nothing. You will learn to recognize them all.
The company leaders will lie to you. I could go on and on about the outright lies we have been told. So many that I cannot remember them all. They are going to tell you that if an upcoming contract vote does not pass, that you will loose your job. This will be a lie. There are thousands of people like me that are going to retire. We will need to be replaced. A retirement package is just a tool that the company uses to buy yes votes from old guys like me to sell you down the river. Don't fall for it.
Sign a card. It is in your best interest to have a union that represents your craft.