Yes you are permitted two activations which can be Windows + Mac
I have CC apps installed on W7 desktop and on my Macbook Pro
I'm not sure if the student version works the same way?
Identical in all versions.
Cloud desktop products are cross-platform.
yes if if you have the student version of adobe creative cloud you can install your CC apps on your dell pc and macbook at home here is the to verify- https://helpx.adobe.com/creative-cloud/faq.html look for the question " Can I use the software I download from Creative Cloud on more than one machine?" click on it to see the answer
i hope you use these apps ALOT and learn and enjoy it.