If you are new to Unreal, Lyra is probably not a good starting point.
It’s a pretty complex framework based on GAS (Gameplay Ability System) that is even more complex.
A Udemy course I would recommend to learn GAS is this from Stephen Ulibarri, it’s more than 100 hours long but it gives you a good understanding of that framework (and also teaches you basic unreal things)
A youtube channel that does Lyra videos is NanceDevDiaries, try to give it a look before buying stuff and try to understand if you really want to dive into this.
Never compare unreal to web dev, you’ll discover how many absurd things are present in this engine soon if you continue to work with it!
I have to say that I still prefer it to Laravel tbh! 
I really don’t like the gameplay tags approach but it’s very versatile and GAS is a standard in many studios that use Unreal, for many projects it’s like shooting a fly with a cannon, so, try to understand what you want to achieve and if you really need it.
However, it’s pretty impossible to dive into it relying only on the scarce documentation that Epic provides, I really recommend following a decent course, trust me, you won’t understand a thing of it just looking at the source code and content examples.
Lyra itself is so big that it’s very hard even to locate files to change the UI color if you are not familiar with the engine