Importing Tilesets

Hi!
I'm having a bit of trouble importing my recently purchased RPG Maker Fes Tilesets into RPG Maker MV, because they are not named after their place and I'm not very experienced with where everything goes when it comes to importing, so I could use some help. Have you imported RPG Maker Fes resource pack into MV successfully? Can you tell me where you put everything?

All of the resources are marked accordingly to the section that they are to be placed in. For example, fes_inside_A2_in would be placed in the A2 section of Tilesets, fes_inside_A4 would be placed in A4 and fes_inside_A5_08 would be placed in A5. The BCDE labeled files can be placed in any of the B, C, D, and E sections to your liking.

Does this help?

Helps a little to know that the BCDE can be placed where I want to, but I'm having trouble with for example, that there are multiple A1s in world. And that the "world" tiles seem to be the only ones with grass autotiles, which means it would also be used on the outside tileset? Also, there are a lot of outside BCDE which are not labeled as any particular environment and just have numbers going up to 40.

It's fine that those are labeled world, the most important part is that they go in the A1 section because they are water tiles and they can only go to in that section. The naming conventions are just for labeling and knowing what tilesheet is what. You can place them anyway you want as long as you follow the A1, A2, A3, parts because those sections are specifically for those types of tiles.

if you have several A1 tilesheets, then you can't place them into a single tileset - you can only use one A1 for each tileset.
you can either use them on different maps or if you have to use them on a single map you need to cut and replace some tiles to "frankentile" the sheet with the things you want.