Growing from Seed

I think I mentioned previously that I had planted some seeds in the backyard and was hoping to grow some lettuce, basil, chilli and rocket. More then anything it was just to see if I could. 
Well some of the seeds have sprouted and pretty soon they'll be too big for what they are in so I'll have to move them to some other sort of garden bed. I don't want anything too huge and I'd like it to be

raised and maybe portable so I can put it away when not in use. Hopefully something like this will do the job and at least it doesn't cost too much if things don't work out. 
If it turns out that I can keep plants alive and I'm enjoying it, I may get another couple of them and try some different vegetables or herbs.
There are a couple of things that I'd like to try and grow at home, potatoes would be awesome, we eat a lot of them so it could save us money, not that potatoes are expensive. Another thing is garlic. Apparently you can just put garlic that you bought at the shop in the ground and it will grow, well as long as it is Australian garlic and not imported, as the spray the imported stuff with something that will prevent it from growing.
Growing up, my parents used to grow cherry tomatoes, beans, silverbeet and a few other things. We ate what they grew and I never really appreciated it, but now I can see why you would get a sense of satisfaction if you grew something from seed and then fed it to your family.

Bomber
hopefully getting green thumbs