How about:
1) If you don't know how to properly build a system have someone do it for you.
2) If you don't know how to upgrade or repair a system have someone do it for you.
3) If you don't know how to properly protect your system on the internet, pull the plug.
4) If you don't know how to use Google, learn.
5) Make regular backups of your data to something other than a hard drive. If it's really precious back it up to two places.
6) If you are using Windows use a real one and update it as needed.
7) As a matter of fact use legal software for everything.
If you are lost, post on Computer Hope, but only if you use proper grammar and spelling. Complete sentences are always appreciated.
9) Don't be deceitful to Rob Pomeroy. If you are, all bets are off.
10) See below.