Below are listed blog posts on the Food Garden Group blog that discuss seeds and sowing:
Why should I grow seeds in punnets and what is the best method?
Which vegs should I sow directly into my garden and what is the best way to do this?
How to make seed tapes for spacing out seedlings perfectly
How to check whether your seeds are viable
Saving seed so you won't have to buy it
Why do some seeds not germinate and how long can I expect seeds to remain viable
Sowing in modified milk containers
Sowing for vegetables this winter (see the tips and hints section)