In search of a kitchen garden

Well I have started this adventure by gardening in pots. I wasn't such where to begin so I thought Bunnings would be a good start. I got us a dwarf lemon, a dwarf lime, some blueberry plants, rosemary, a bay leaf tree and some parsley. As I am new to this I don't want to do too much too soon and end up chucking it all in. I also got some lettuce seedlings from the markets for the ridiculously cheap price of 12 for $1.80.