I've known bitcoin for a while and even make use of it but I clearly don't understand how it works technically to a large extent aside from making transactions and understanding that's it's a decentralized currency.
If you've been familiar with Bitcoin for a while and have used it, I'm sure it won't be too difficult as long as you can refer to some of the links that people have shared before. There are many resources to learn about Bitcoin technically, and it's probably not limited to forums, as long as you have the desire to learn. When you want to understand the technical aspects, you have to learn them using the available methods so your focus will be much better. I think there are many people in this forum who understand that, depends on how you learn slowly to gain that knowledge.