Hi, piortr_n.

Did you checkout both the guide and the reference pages?  The guide is aimed at new developers who need to learn how Bitcoin works.  The reference is aimed at the developers who know how the general system works but need, as you say, tables and short explanations (which we've put all on one page for easy in-browser Ctrl-f searching).

• Guide: https://bitcoin.org/en/developer-guide
• Reference: https://bitcoin.org/en/developer-reference

Both are linked to from the main page, which also links to other useful resources: https://bitcoin.org/en/developer-documentation

We'll be adding more content over the next few monhs, so check back often!  Thanks!