It will be very hard for the school to tell you what topics they are covering in advance, as much of the learning is child led. Ie, child is exposed to various things, shows an interest in something, and learning is tailored to that. Sometimes if a child shows an interest in something it can be expanded upon in lots of different ways to cover all areas of the curriculum.
Basically, they will be following the EYFS, part of which are the areas of learning and development. There are six of them, problem solving, reasoning and numeracy; physical development; creative development; personal social and emotional development; communication language and literacy; knowledge and understanding of the world.
You might find it useful to ask the nursery how they do their planning and incorporate the children's individual needs, and ask to see their evaluations.
As your child is so young, good things to concentrate on at home are things like doing puzzles, playdough and messy activities, simple board games, threading toys, anything that requires fine motor skills, doing cooking and looking at the numbers for measurements and what happens to the ingredients and talking about it. When children are so young you can teach them so much just by doing what they naturally enjoy, it's just that sometimes parents find it hard to know what a child is learning from each activity.