Welcome to the Monastery, rafa.

Your observation that "I am looking for a ..." begs for a pointer on the topic of "looking for" -- Super Search -- and the more general suggestion that the Search box (in the PM bar, near the top of most pages) is a wonderfully facile prayerbook.

As you might expect, upon reflection, and as Parson Marto's response above exemplifies, many questions confronting a Novice here have been asked and answered before. Finding those answers can often be much quicker than awaiting replies to an SoPW.