PhantomHaze, glad that you want to help! It's not that difficult, it just depends on what you want to do. A good way to get a feel of what to do is to go to the original Pokedex 2.0 Region Thread and look at the entries there. You can copy and paste an entry and make changes depending on what you want to have. For beginners, it's a good idea to start out with making a trainer, as that is less work that making a route. An elite four trainer is probably the best to start out with as they have a defined team: level 62-64 Pokemon. You don't need to worry about location as well. Good trainer mugshots can be found for your trainer here ----> https://imgur.com/a/Rjd5E
tl;dr: The best way for beginners to get in is to design a trainer. Look at previous entries for an idea of what your layout should look like.