1.First Look at this video to set up the server
2. Then this one to set up the client
Note that these are not ycsoftware.net videos, they have been selected from youtube because they summarize really what i wanted to write about, which is: How to set up vpn on windows.
If you prefer to read, check this site out:
FYI: The Default VPN Port on Windows is 1723
Loosing internet connectivity when vpn is on