If you’ve never used a rice maker before, there’s going to be a bit of a learning curve. If you can use a microwave, you can use a rice cooker. You might have to fuss around with it a bit before actually using it.
Read the manual before you start and there really shouldn’t be any problems. These are fairly simply appliances to use. I really recommend reading the manual for the Cuckoo rice maker before you start trying to make rice since it is from Korea and in Korean.