Sometimes, things seem complicated just because the basic concepts behind them weren’t fully understood.
Take antenna port definition in 3GPP TS 38.211 as an example:
“An antenna port is defined such that the channel over which a symbol on the antenna port is conveyed can be inferred from the channel over which another symbol on the same antenna port is conveyed.”
But if this is understood the way it’s explained in this video, it can make a difference in better understanding other telecom topics. 
Watch Video on YouTube: 
https://www.youtube.com/watch?v=b_2pLRs37tQ
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