Quote from: Ven1729 on September 10, 2019, 10:07:24 AM

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Official forum stats are located here:

-   Posts and topics per board: https://bitcointalk.org/index.php
-   General stats: https://bitcointalk.org/index.php?action=stats (*)
-   Merit Stats: https://bitcointalk.org/index.php?action=merit;stats

(*) Bear in mind that not all stats are up-to-date. For example, the Monthly Summary leads up to December 2017. Also some of the averages seem to be considering all time history, and may not represent averages that are consistent with what currently goes on.

In addition, take a look a threads such as List of Bitcointalk stats. Besides many statistical threads (which may or not be of any use to your research), there is a section called Interesting Compilations. There, specifically, there is a range of very interesting posts by @xtraelv on Bitcointalk itself.

Also see What satoshi wrote? and Original BTC White paper from Satoshi Nakamoto.