French instraments, do i use du, de la, or des?

It depends on the instrument and whether you mean to say "playing a guitar" for example, or just "a guitar".

Uh.. what is that supposed to mean?

•don’t over think about math, just breath, be calm
• practice practice practice! it will get better, even if it’s hard
• try some flash cards to u remember
• don’t get yourself distracted, be focused or your gonna get lost!
hope this ! : )