Sort: ย 

I don't understand many mushrooms, but during this walk I got excited and I'm thinking of studying them in more detail.

Its an endless universe of study to get into especially foraging for edible species. The giant parasol mushroom has a very recognizable form with only one annoying lookalike called the "vomiter" (Chlorophyllum molybdites) which has green spores compared to the edible version which has white spores. Judging from the pictures I think you have the edible version as the vomiter is a bit lighter in color overall.