New to YAML mod. Any tips?

Hey there, yesterday I began modding the game, using the awesome curated mod list found in this subreddit, and chose a good amount of them.

But I hear everywhere they talk about YAML as a basic mod. It seems kinda complex, not the mod itself, which I think its this one? (https://www.nexusmods.com/mechwarrior5mercenaries/mods/459) but all the other additional YAML mods.

So, is it enough with the base one? Any recommendations? Conflicts? I though some of your knowledge could help me. ty!