I've been working at home in my own practice for 20+ years.?? What I missed most was the water cooler because it was a social network site where one could get the scoop on what was going on in the company and how it affected my work.
When the kids were small, they had to have a clear understanding that when I was at work, I may have been in the dining room (first office) or the bedroom (later office), but I was at work.?? It was occasionally tough on them because when trouble arose, I was the parent in residence, and had to put up with the occasional noise.?? In those days it was strange, but now with the COVID19 challenge working from home is more acceptable and the occasional background noise and family interruptions are tolerated much better.
Now some tips:
If you have to have a word processor (and who doesn't) and the company doesn't provide one for you, Microsoft Office has several deals for about $100 annual subscription, or if you want free you can get Open Office which is part of the Mozilla project, and it's compatible with Microsoft Office for about 95% of the content, including spreadsheets, word processing, and slide creation software.
Adobe reader is free for download.?? It will enable you to read but not alter pdf documents. For that you must pay and there are several other processors including OPEN PDF which is inexpensive.?? For video?? conferencing Zoom is excellent, but then for smaller conferences, try Skype (pay for use), or some of the other platforms . Zoom will work on Mac and PC.??
Real Player is good for most video applications, and so is VLC media player. Both are free and VLC doesn't come with as many advertisements.
For scanners, you are on your own.?? They aren't that expensive $150 or so.
Video cameras can be had for $100 or more, depending on your choice.?? I use an external because I don't like the one on my laptop, and I'm not always on my laptop.
Get yourself a good external ergonomic keyboard ($110-$125) because it's more comfortable
You will need a good chair, and if you have wheels on the chair you will need a floor pad because the wheels will cut into the carpet and shred it over time. If you are only going to be home for a week or so, don't worry about it.
An elevator desk is a nice touch but expensive, but there are laptop and keyboard holders which can elevate to your needs.?? They are advertised on TV regularly.
One final thing about keyboards-- I find that it is best to have the keyboard flat on a larger surface because your arms are supported and you won't get carpal tunnel from having your wrists bent upward at a funny angle from the elevated keyboard.