The MOST important piece of advice I could give you would be this...MULCH. If you do not, you will have a high production weed patch- I am not kidding. Since I assume you will not be putting in a huge planting, this is an easy thing to do. Even a thick layer of grass clippings is great. Just surround the plants with whatever you choose to mulch with. Even straw (imagine that!). Place your plant roughly one foot apart and you will do fine. Make sure they get a good watering weekly, particularly while they are setting fruit.
Strawberries are easy if weeds are controlled.
Like Dillard says, start with quality plants. I might suggest you skip the garden centers etc. (usually wrong cultivars)- and mail order them. Nourse farms and Simmons Plant farm are both very good places to purchase from. Be sure to know what zone you live in and select accordingly. Nourse has zones listed right next to variety. This is most important if, like me, you are a Southern grower. If you are in the more Northern states, most all do well.
When mail ordered, you will get a bundle of bare root plants- don't freak out- they are tough. Just put them in a pail of water and march out to the garden and start planting. Strawberries are very forgiving of newbies, lol. Make sure you have a MINUMUM of 6 hours of full Sun.
Since you have small kids, you might look into planting a day length neutral variety- they will produce all season if the temperatures are not to high. Helps keep them interested! Perhaps order two bundles...one day length neutral and one a June bearing variety (bundles are always 25 plants). See what type you like better. 50 plants is quite enough for a family of, say, 4. They will produce a lot of runners too...giving you more plants if you desire.
MULCH MULCH MULCH!