Take BPF's advice. Don't worry too much about instrument procedures yet. Concentrate on what you are doing at the moment. It will all help you in the end.
I found that when a low hours student started asking lots of questions about stuff they hadn't got to yet, it just confused things and made everything more complex that it was required to be.
With anything in flying, learn the basic skills first and you'll find the more advanced stuff comes far more easily.
It's a real pain trying to teach instrument flying to someone who hasn't got the basics of attitude flying down properly yet. A waste of my time and their money.......
BPF, in relation to the AI and DI. Amen to that!!