beginner with some questions

im not planning to get tree frogs for quite some time as i really want to get deeper into information about them and make sure its a well suited hobby for them and i am able to correctly care for them and set up a nice enclosure for whatever one i do end up getting in the future. i thought it would be best to ask some more experienced people the downsides of owning them n the upsides and which species are most beginner friendly i always stress when getting a new pet and need to make sure im well suited for the job of making sure they have the best care i can provide.. ive really been looking into amazon milk frogs however i really feel like google is not doing them justice in the information aspect of things lol and id just like a bit more informed opinions and info on them:) (edit) i have a 18” 18” 24” im going to be using for this if that helps narrow down a good size for the tree frog species