The ko-so-a-do may seem difficult to grasp, but they are very regular. Learning them early on will definitely help with your progress.
The key is to understand the three positions:
- Near the speaker [the "k" words]
- Near the listener [the "s" words]
- Away from both [the "a" words]
The fourth, "d" words," are the question words.
By now, you should understand こ words represent something close to the speaker, そ words represent something close to the listener, あ words are far from both, and ど is the question word.
Now, let's look at location words. Where? Here, there, and over there.
■ Form: Standalone words to show location.
I live here.
Please sit there.
That restaurant is good.
[a restaurant far from both speakers]