I’ll second what @OwlBasket said, I have lots of pots, from small trees in large pots to summer bedding plant displays and in a hot position they do need loads of water.
Why don’t you start by getting 2 medium sized pots for one either side of the path, buy one bag of multipurpose compost, then chose a small selection of annual plants, they are the brightly coloured ones that will be everywhere over the next couple of months. Put 4 or 5 small plants in each. It’s then not a huge commitment to water them every day.
Plants you can try are:
Petunia,
Petunia surfinia, these are great they really bush out and trail over the edge and look spectacular
Geraniums, put this in the middle
Fuchsia,
Busy lizzy
Lobelia, these trail so on the edge
If you go to the garden centre now they have them as babies, ours are 8 plants for £8 and all have pretty pictures next to them so you can chose what you like.
Don’t put them outside just yet, it’s a bit too early and the frost might get them.
If you get fuchsia or geraniums and can keep them out of the frost they might come back next year too. B