[greasepaint]

A few security tips.
Use the Zonealarm firewall (free for personal use), or something similar.
Avoid Microsoft products.
Binary (non-text) files sent by email are a major security risk...
Avoid or minimize their use. Do not accept a non-text file from someone
you don't know, and then only with a reason to do so.
Be careful with email attachments.
Older, or text-only email readers, are more secure than new email readers.
IMO, every new feature is a security risk.

[testforecho]

all good suggestions. I follow most except avoiding Microsoft.