Solved Looking for tutorial on noise reduction in Sound Forge 16

Hi Derek, 
I am overwhelmed by the quality of info in the answer. Firstly, thank you for the link! I can see the offer has been extended and am really happy about it. I will definitely be able to upgrade before the end of May which is great.
Second thing, I managed to reach Magix custom support. They wrote me back which made me really surprised as it has turned out I have registered with another email which I so rarely use that I even forgot about it. 
So I signed in and it opened. This was the email I use for PayPal only, maybe that is why I didn't remember, as I used my main email for all other things related to Magix and programmes I bought. 
I will have to slowly go through the information in your answer.
One thing is a bit worrying is that in Sound Forge 12 the noise reduction was easy and I could really hear the difference. Here it is more complicated for me so if I don't understand something I will ask here. I hope you don't mind that because it must be rather tiring answering such simple questions. Because they have to be simple but unfortunately not for me.
As soon as I upgrade, I will get back to work. 
Kind regards
Agnieszka