Welcome to the forum and be sure to have a go at TG2. It's amazing, and (unless you're virtually brainless) not too hard to get to grips with. Just start by using some tutorials and try making simple landscapes. If you encounter a problem, ask, or use the search function. There is tons of useful information about on this forum. Try to get to know how the node system works from simple setups by others. That works best, IMO.
So, it's not a Mt. Everest, but a good Alpine hillock, you'd have to climb.