BeefyMeats

BTW this is more of a windows question than networking.
The easiest thing you can do is create a new non-admin user (computer management -> local users & groups -> users). That way they only have access to what you give them. Than make a share, and assign share rights to the new user you just created. (This is the user you give to people its a "service account")
 
If you wish to restict this user form actually loggin in to the computer open gpedit.msc and go to (computer configuration -> windows.. -> security..->local..->user rights..-> Deny log on locally.) add your share  user here. (or add a group if you want multiple)
 
 
There is also a way to allow anonymous (unauthenticated) access to shares, but thats kinda not so good, and more steps to get working. I would suggest you give them user accounts that you manage and can control access.
 

WDS and MDT are what you're looking for. If you have a Windows server already, then you're basically set. 
 
One caveat is that if you also deploy drivers, you'll want to use limited hardware configurations, or make a per-model image.

As long as its not joined to their domain and the OS was installed by you; nothing much at all. Other then possibly removing the activation if they used a MAK key,
If it was activated with their own local KMS activation server, then it might have be re activated every once in a while on their network.
 
if you run the command below, than it will tell you what licence model was used to activate and the days remaining if KMS was used.
A normal key would say "Retail channel"
 
 slmgr.vbs /dli

As long as its not joined to their domain and the OS was installed by you; nothing much at all. Other then possibly removing the activation if they used a MAK key,
If it was activated with their own local KMS activation server, then it might have be re activated every once in a while on their network.
 
if you run the command below, than it will tell you what licence model was used to activate and the days remaining if KMS was used.
A normal key would say "Retail channel"
 
 slmgr.vbs /dli

Virtual audio cable is free (for one virtual cable), if you donate $5 you get two more virtual cables.
Anyways, sounds like you want Voice Meeter. you can have two mic inputs into one output.
 
Unreleated; check out VST Host; its free any you can use free vsts like gates, reverb, gain, eq, compressor. good stuff

Yes, pretty sure you can do it with FFMPEG.

It does vary based on cost of living in the area you live.
 
At least in the southern part of the US a computer technician can make 35-45k a year. Maybe slightly less for entry level since there is nothing to draw on from the past.
My fist tech job was about 37k, but I also had to do a bit of driving around every once in a while.

Usually I use clonezilla as you can clone to hundreds of drives at once and it's very safe

I've been a sysadmin since the late 90's. Here is what you do.
 
First get someone who knows nothing to tell you what to do. Or better yet a committee, people with HR, PM and Business degrees are best they know exactly how your IT infrastructure should run!
Install different software and different OS's on each one and make sure you have users that like to use weird shit like WordPerfect or Netware only printers.
Install 3 routers in NAT in a row and VPN two of them together for no reason to simulate your predictor.
Never backup or document anything.
Take 4 hours out of your day every day and go sit in a room to simulate a useless meeting where they required you because *something* they are doing has *something* to do with the *Internet* so they need a sr. sysadmin at the table ovis. Right before lunch is the best time to do this because hungry people think better.

I would just create a scheduled task to run a batch file
:loop start "c:\blaablaa\shittyProgram.exe -parameters" timeout /t 36000 && taskkill /f /im shittyProgram.exe timeout /t 30 goto loop  

Random person: "Whats a good pistol?"

Internet firearm users:

 
S*IT IS ABOUT TO GO DOWN!

So about $2 a month from bots? Thats like $24 a year.
 
My testing servers cost $15 a year  and usually do nothing. Maybe something like this would make them "free".
I have thought about using them to mine while not in use to recover some cost, but have been too lazy since my lunches usually cost more.

This might not be relevant, but you might like "Microsoft Deployment Toolkit" for imaging a lot of computers at once. Especially if you want to automate joining them to AD and loading some basic settings, inputting the key, and apps. Its also free.

If you're worried about bandwidth of updates, you should run WSUS which will give you central control of which updates are deployed and when to your machines. Active directory enables centralised access to network resources, but it doesn't prevent local logins if needed. If people use their own machines, they can be domain joined but still have local accounts. Use technologies like Windows Defender Credential Guard to ensure business data that's available when domain joined cannot be exfiltrated when running in local user mode. You have advanced control over who can join the network, and you can ensure devices are vetted (virus scans, policy validation, etc) before gaining access to network resources.
 
The short answer to your question is: Hire an expert. Sorry. If it was a small business with no more than 20 machines i can see using trial and error, but not for deployment over hundreds. You need someone who understands these technologies inside and out to ensure this doesn't go extremely badly.
 
If you really want to get into the nitty gritty yourself, you'll want to start with some in-depth books like https://www.amazon.co.uk/Active-Directory-Designing-Deploying-Running/dp/1449320023

a core 2 duo would be overkill for a router, you should be able to combine them.
this is using a different but more common software for routers.
 
 

Ya, set the (hidden) "stereo mix"  as default recording device in windows first.
 
Or use virtual audio cable with audio router program if stereo mix doesn't work for some reason.

Ya, set the (hidden) "stereo mix"  as default recording device in windows first.
 
Or use virtual audio cable with audio router program if stereo mix doesn't work for some reason.

That setting is for measuring resistance, continuity, and amps. So in that mode the probes probably allow current to flow from one probe to the other probe.
A quick search says that meter should only be used to measure a maximum of 200 MICRO amps  a car battery can be like 600amps but the wire in the dash is limited to its own resistance based on the diameter of the wire (so maybe like 40amps though a 12 gauge wire) and hopefully the wire was fused somewhere. 
 
I don't think you would have had trouble if it was in the voltage mode. 
If you want to test continuity to random things, I would suggest sticking the black probe to a known ground, than measuring all your mystery pins for voltage first so nothing gets shorted in the future.

If you don't want to directly connect both together.Then buy a mini network switch. Than plug both into the switch, and the switch into the single internet port. The good thing about a (non managed) switch is that it does not matter where things get connected.

If you don't want to directly connect both together.Then buy a mini network switch. Than plug both into the switch, and the switch into the single internet port. The good thing about a (non managed) switch is that it does not matter where things get connected.

Thier FAQ says it only work on on LAN (not though internet). https://support.steampowered.com/kb_article.php?ref=3629-RIAV-1617#howdoiuseit
"Login to the Steam client on two computers on the same network"
 
Others have said that you have to sign in to both with internet at least one time on each machine, than they can both work in offline mode. 
Also just because you connect a cable between two machines (without a router/switch) does not mean they are on the same network if both have DHCP enabled.
If you are directly connecting both together via ethernet; than you would have to statically set an IP and subnet mask on both machines so they can talk to ea. other. (no gateway is needed)
 
Usually your home router would be fine and still allow internet access. Why not use both machines on the same home router? I think 4k only needs like 100mbps link which should be easy via wired, but may be a challenge if wifi is crappy.