Welcome to the forum
@Simon_drums , from another late starter (53)
Sorry to hear of your diagnosis. It is a shock at any age, but it is a manageable condition.
How did your diagnosis come about? If you had very high levels they will want to bring them down slowly, and then it will take a bit of time to sort out your insulin doses. These vary for everyone and it is a case of trial and improvement, and also you will be taught how to make your own adjustments to your doses.
When I was working I had different doses for work days and for weekends. When I was busy and active I found I needed less insulin as I was using up more of the glucose in my blood. This will all become part of your new normal life. Talk to your Diabetes Specialist Nurse about this and don’t be afraid to keep asking questions of them. They are there to help you learn to self manage.
However good we become at making adjustments, it is important to have a hypo treatment with you at all times. I use Jelly babies as they are easy to carry with me. Others use cartons of juice, dextrose tablets, other sweets, ... I avoid chocolate (for a hypo, but still eat it at other times) as the fat content slowthe release of the glucose, and if you are hypo you want it to bring you back up quick. If you work with others it would be worth mentioning about hypos, even if it is only to tell them that there may be times when you just have to STOP and WAIT. That is not always easy to do, but it is essential.
There is plenty of help and support available on here. Any questions that arise, just ask.
No one will mind, as we have all been there.