Market Data Compiler - NADEX - Beginner Help

Imported from previous forum

Hey there,

I'm looking to create a market data compiler, to record prices of NADEX derivative instruments, and hopefully dump them to excel for analysis.

I know the basics of JSON and C++, but am a total beginner when it comes to FIX protocol.

Anyone able to point me in the right direction? I'd love to find a piece of code (ideally one that does something similar to what I'm trying to make) that I could study. Any beginner tutorials would be appreciated as well.

Thanks!