Hi Victor,
Sorry to hear about your diagnosis. I am 6 months out of treatment for the same thing (tonsillar cancer, stage 4a) and doing quite well, thank you.
The best thing you can do for yourself is to get youreself in as good physical condition as you can, gain some weight, because your going to lose some during treatment. Spend some time here going back through the posts about side effects and what works for them. There is a wealth of information here that you wont get from your doctors.
Set up your support people ( friends, family, significant other) so they know what's going on. I found that the vast majority of my friends were willing to help in any way they could, from offering rides to the hospital to shovelling my driveway to offering cash or groceries.
Stay hooked up here, we can offer you answers when you need them and a friendly ear when you need that too.
Tonsillar cancer is very beatable,
Best wishes,
Mike