Nice space! I haven't had a garden that big since I was a kid! Basil and marigolds are great companion plants for both tomatoes and strawberries. Lupine is a great companion flower for strawberries, and you can grow shade-tolerant veggies like lettuce and onion around the tomatoes and peppers.
Thanks for the reminder that I need to start my tomatoes and peppers.
I like doing a bed approach where everything is grown as close together as possible with no room for walking between the rows of plants. The bed is 3-5 feet wide and as long as you want. The plants are accessed from each side of the bed, and the bed is never walked on to avoid compacting the soil. You could use 2x6 or wider lumber to mark and raise the bed, but just mounding it up some or some other way to mark it like twine is fine.
Will they be adding compost or fertilizer? If not, get some organic fertilizer for tomatoes, which will be good for any fruiting plant. Mix that and as much compost as you can into the top 3 inches of soil, or deeper if you don't mind more work. The top 3 inches can be done with a garden rake, and deeper is probably best done with a spading fork. For compost, try to get a mixture. My best source is a local mulch chain which has garden compost (mostly composted vegetables from grocery store waste), leaf mulch (great stuff!), and mushroom compost. They also have "com til" from community recycling, but I don't trust that or the cow manure because I also grow root vegetables in the soil.
Are your tomatoes determinate or inderterminate varieties? For indeterminates, plant 2 ft apart stake them with a 6 ft stake, pinch off suckers. For determinates, plant 2-3 ft apart and cage with a heavy duty cage which is well-secured in the ground. I plant only indeterminates, and I interplant lettuce, spinach, onion, basil, and nasturtiums around them. Peppers might also need some staking. It's best to stake any plant when it's first transplanted so that a stake doesn't take out the main root system. Tomatoes are different from most plants in that they grow roots from the stem, so plant them down to about the first set of leaves for a strong root system.
General gardening info on burpee.com is a good source. For the more general approach and theory stuff, I like the biointensive approach:
http://www.growbiointensive.org/PDF/FarmersHandbook.pdf
videos:
Ecology Action: Self Teaching Course
Much of it isn't usable because it focuses on small-scale sustainable farming rather than just a small plot garden, but I think it's still valuable information. For example, you obviously won't have to do any double digging, probably no place for composting, and seed saving often isn't practical unless it's a small farm and plants growing nearby can be controlled.