How do i make a default wireless network?

for some reason, recently my wireless doesn't automatically connect to ';home';. out of no where it will just connect to some completely random account, like one from a hotel i was at months ago, or the account of the people i babysit for. i can always switch it back to ';home';, but it's a pain. i would rather it just stayed on ';home'; as a default. how can i do this?How do i make a default wireless network?
go under your wireless settings, find the one you want to set to default by right clicking on it and changing a few properties. or in some it's as simple as clicking an up arrow to change priority of connection. Sorry if I'm not too thorough I don't know what you're using to manage your connections