MAN TGX 26.D20 Help Needed

Hello everyone.

I own a grain processing company, and recently bought a MAN TGX 26.D20.
It got delivered to our site and now we are looking for a driver.

The thing is that I am a person which likes to know a little bit of all, so at the moment I am trying to look for a manual on what does each button do, and what does each light on the dashboard mean.
Regarding the lights on the dashboard I found a manual but it does not contain all the lights for my case.

If somebody could help me by directing me to where should I start, I would be more than thankful.

Also for example at the moment we need to exchange the hydraulic oil for the trail, but no idea where is the reservoir.

I am ready to pay if I have to in order to get my hands on these books.

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You’d be more likely to get useful replies if this was moved to the PDF.

tachograph:
You’d be more likely to get useful replies if this was moved to the PDF.

Posted there, will delete this one.
Thank you for your suggestion