10 Commandments of all things Computery for normal people

And thus the prophet Deus Ex Machina carried the most sacred written words from on high for his people: 

1 – Thou must be curious. Do not be afraid of change, it’s the norm.
2 – Thou shall patch every 2nd Tuesday of the month if you use Windows. Less regularly if you use a Mac or Linux.
3 – Thou shall change thy passwords monthly,  never share them and do not use the same password for all of your accounts (but don’t store them down insecurely).
4 – Thou shall backup regularly and externally. Purchase an external hard drive and cd/dvd-r’s.
5 – Thou must appreciate and never abuse thine family techy. Just because he/she is family doesn’t translate to 24/7 on-call support.
6 – Thou must purchase a warranty with any new computer, it will save time/money/frustration.
7 – Thou must use anti-virus/firewall software and update it regularly. 
8 – Thou must learn how to read a manual. They are your friends and should be consulted before thine family/friend techy.
9 – Thou must use never login as administrator, this will make the tech gods very angry.
10 – Thou must clean thine computer with canned air at least once a year.