The rarity of a solar eclipse occurring on Earth is pretty slim. First is the fact that the Earth is about ~71% water and that already means you have to be on the ~29% of land which is about 57,308,738 compared to 139.7 million square miles of the oceans.Lastly you the Sun and Moon are millions of miles apart and are just the right distance away that they look roughly the same.
Earth's magnetosphere and ionosphere will partly be affected by the upcoming solar event. Some animals like birds, aquatic, and land mammals will be affected by this strange phenomenon. So all in all, don't use anything that rely's on the Earth's magnetic field i.e a compass.
Have you ever heard people tell you never to look at the Sun? Well it's even worse with a solar eclipse. So, reason being is because when staring at an eclipse, (specially a total eclipse) your eyes dilate to get a better picture. And when that happens, your eyes let even more light in and that can completely scorch your eyes.