Don't worry about it. Most of us are, until told about what we don't know. That's why you came here - to ask the question. We came earlier, so found out earlier.
The exceptions are rare. Think Faraday and Einstein et al
IIRC in the UK there are 13 wifi channels, and whichever your router, (strictly speaking its WAP component), chooses you are likely to overlap with a nearby one. There was an excellent free checker called inSSIDer 3 that showed all around you. inSSIDer 4 that replaced it is chargeable.
Bear in mind that whatever channel your router is using it spreads over 2 each side, peaking on the one chosen. So 6 covers 4-8, 3 covers 1-5.
The wireless pages of your router should tell you what it has selected and let you change it to experiment. But without knowing what is around you are shooting in the dark.
It looks as if
you can still get inSSIDer 3.
The indispensable man or woman passes from the scene, and what happens next is more or less the same thing as was happening before.
My broadband basic info/help site - www.robertos.me.uk.
Domains, site and mail hosting - Tsohost
Connection - AAISP Home::1 80/20. Sync 59997/15142kbps @ 600m. - BQM
Edited by RobertoS (Mon 21-Dec-15 22:14:03)