My suggestion would be to think about where you want your tank to be in a year. What kind of tank do you want it to be? a Softies/zoa tank? an LPS tank? an SPS tank? A full blown mixed reef? Some corals are less compatible with others (some leathers can inhibit some SPS for example), a lot have different needs, and some that are good training corals in the beginning can become a serious pest in the future if you decide you don't want a tank full of blue and red mushrooms anymore. So just throwing in whatever now because you think you can keep it alive might not be the best choice - though it is a good way to learn.
Whether something is a 'beginner' coral or not depends very much on the equipment that you have. If you've got a crazy powerful LED/MH setup, an auto-doser, and tons of flow in your tank, there are plenty of 'beginner' SPS. If you've got dimmer lights, less flow, and are manually maintaining calcium and alk, then pretty much all SPS should be considered 'advanced', and you should stick with LPS for now.
Most of the hobby staples like frogspawns, hammers, etc. are pretty forgiving. In fact I dare you to try and kill one. I have a frogspawn that started life in a pico where it got 100% water changes when I remembered to do them, got no water changes for probably 2 months while the tank was at my dad's, was subjected to salinity swings that would kill a copepod, then got moved to my big tank, was cooked nearly half to death by over-powered lights, then got dropped during re-scaping in to a huge rock pile that was too much of a PITA to move so I gave up on it.
6 months later I caught a glimpse of it in a dark cave and finally fished it out. it only had 3 heads left and they had each withered to the size of a small grape and turned completely white. I put it in the light, and now it looks like this:
moral of the story, a lot of the LPS corals out there are pretty forgiving assuming you've got enough/not too much light for them.
My other advice is that if you want an anemone, get it sooner than later. It's going to wander around a lot in the early days, it's better to let it figure out where it wants to live, get settled, then build your coral collection around it rather than adding the nem late stage and having to emergency rescue half your corals from it's path.