If I manage to remove the worms, can I turn restore on again?
Yes, no problem.
Regarding my home net. If my friend...
Only if your system is clean and protected. Worms and other malware spreads (along with some other methods) over networks. The Internet IS a network also.

And don’t worry about your knowledge. Nobody knows it all, and learning takes time. After working with comps for over 24 1/2 years, I am still learning :wink: