Hi Jo Jo,
Once you get the 'hang' of it, it will be easier. Most plants in pots need to watered daily, some twice a day if they are in full sun. They dry out very quickly and as the root systems grow and fill the pot, they tend to dry out even more quickly.
Clay pots and coco lined pots breathe and tend to dry out more quickly than plastic ones. Small pots will dry out faster than large ones. You will need to soak your pots well, preferably in the morning.
When weeding, the best way to make sure you are removing a weed and not a valuable plant is to pull on it. If it comes out of the ground easily, it is a valuable plant.