3 suggestions for you:

1. online 1 page chart of what to plant when
http://www.portlandnursery.com/docs/veggies/veggie_calendar.pdf

2. Seattle Tilth's Maritime Northwest Garden Guide available at PCC markets, Whole Foods, online through Seattle Tilth, or used copies (The older editions are just as good as the newer. Lists specific varieties grown in Seattle area, but if you already have your seeds it won't be useful to you. In the few years I've had it I don't think it's necessary since I've learned to winter sow. The KC Library System also has copies that you can read if you want to preview it.)

3. Winter sowing - garden web has a forum for it where you'll learn how to sow the easy way in milk jugs outdoors as well as a website that offers seeds for SASE to get you started. http://wintersown.org/

If a veggie transplants well it can be sown in mid-Feb. in our climate. Some have success with newspaper pots inside the milk jugs for beans, peas, & squashes. You can use a spice jar to make your own pot maker saving yourself money. Winter sowing simplifies everything and reuses recyclable containers.

It's so easy I'm teaching a workshop for 4-H on Feb. 2 in Enumclaw. There are 4 workshops to select from on all sorts of topics (chickens, pasta making, rabbits, sewing, & more not just gardening) for an all day fee of $10 per family. You don't need to be enrolled in 4-H to attend or be a kid. Invite a friend and have a great day of hands-on learning!

Here is a link that might be useful: 4-H Super Saturday

I would agree with the Tilth Maritime Northwest Garden Guide. As a 4-H leader I also try to be a good example for my kids and keep good personal records about what planting dates were successful or not. I also make local observations about what is happening in nature and plant accordingly - when crocus bloom start onions, cabbage.
I also have done 4-H garden workshops with the "learning by doing" focus and more adults came than kids.
There is a very simple origami pot that uses letter size scrap paper. We make them ahead folded flat until planting.Wish I lived closer to Enumclaw.