Only 2 days for your first installation of linux? Not bad. Accept a pat on the back
The first time I used linux I broke it twice within a week. Since then I have never looked back.
Installing apps on linux = Use your distro's "Package Manager" (Search through those menus). If you had fallen for the charms of kubuntu, I'd be able to tell you exactly,
"Wine"? I'd recommend you avoid it. If you must
use windows apps, try it, but linux has thousands of apps, and one of them will probably do what you want (even though it'll be a little bit "different" from what you are used to, you may well grow to like it better). Meanwhile "dual boot" until you are happy with linux. Took me about a month before I decided to find out how to set the default boot to be linux and not windows because I realised I preferred the former.
Welcome to the fold (and I'm "old" too).