Here is a list of 26 parables. There are other passages that could be described as parables in the gospels but this list are the essential 26. Note some parables recur in different gospels, e.g. the parable of the lost sheep is found in both Matthew and Luke and sometimes the emphasis is different. Here I have just noted one gospel per parable to help memorise locations.
The phonetic alphabet is a great way to memorise 26 pieces of information.
The ultimate goal is to learn the parables themselves from memory. I will be uploading strategies for some of the simple ones over the next few months.