Snowball_101

Hi I recently "adopted" a small, white, fluffy bunny from my neighbor. I don't know how old it is, its breed, or its gender. The story is that one morning this bunny was hiding under the car in our garage absolutely terrified. There was a neighborhood cat approaching it with every intention to kill. I grabbed a towel and caught it, put it into my room, and fed it only romain lettuce and water for two days. The next day, the neighbor let us keep it and didn't provide any other information about it. I named it Snowball and am now here looking for advice on many topics