It's \ instead of /
Most stuff you can find answers on YouTube.
Windows key + R to run a command easily. (cmd for example is a bit like terminal.)
Eventvwr.msc is like your syslog I think. Most problems will show up there, even if they're not problems at all. (common place to send scam targets as it looks scary.)
Services.msc to see what's running in the background. (like systemctl I think, not sure.)
Task manager - Startup tab to turn off rubbish.
Msconfig as an easy way to see services, hiding Microsoft services, or to select safe mode etc.
Rstrui to bring up system restore - works sometimes if a machine is kaput.
Regedit in rare cases - a chonky place where most app and system settings live.
File sharing - need to share the files through the usual file sharing option, but also need to change folder permissions. If only one is changed, it won't let you. Also 'control panel' network and sharing centre, advanced sharing settings, you can turn off password protected sharing for ease, but Microsoft periodically turns it back on.
Hope that helps a bit. Source: residential IT support for 20 years on Windows / Mac. Debian dabbler.
Is that where the orange colour comes from?