Data Compression Algorithms

Reference URL

I want to know more data compression algorithms. LZ4 to be specific.

How can we learn more about this, and what foundation is needed?

I should Know PHP/Linux or some other tools/programming language or technology?

Some discussion was going on here →.

I believe this is there official page → https://github.com/lz4/lz4

P.S. → Moderators, please help me if in case I have filed this under wrong category.