Is such a novice self-introduction allowed? If yes, I would also like to post one, because this is an important moment. <…>
There’s no specific rule against it, but it does seem like it is being done with exceedingly frequency. Other forums explicitly require you to introduce yourself, but that is not something that has a requirement nor a tradition here. My local board has a thread for these cases, but it is place in the equivalent of off-topic (even Reputation, although it is not someone would do as a Beginner), which might be perhaps a more adequate place, especially if it becomes a habit in this section.
Technically, what goes in Beginners & Help should be in the line of:
Beginners & Help - All primitive questions (to pros like us ) like "what are ASICS", "who is satoshi" and "what is mining" should stay here.
https://bitcointalk.org/index.php?topic=703657.0Granted that the above is not an exhaustive list, nor a rigid framework, but …