Since the forum (of 33.000 people!) nobody answers about any tip for beginners I am going to collect the tips that I was told, in order to collect them in a post that is easy to find.
Goldstein dixit:
It is not only important to know the marks - you must know the history and the background - and of course a little of the language.
To buy something you do not know and than ask others is the direct way to financial losses and frustration.
[AG2012/b] dixit:
Be aware of fakes. ``fake unless proven genuine``
specially talking about Russian silver.
[b]Qrt.S dixit:
To collect everything that you stumble into will lead to that your collection sooner or later looks like a scrap yard. What you should do is specialize in a few countries you are interested in and learn everything about their silver marking procedures and history and skip the rest.
Then, I think everybody agrees that to read books and make the research is a main source that any collector should have, bearing in mind that sources, books, can be also wrong in some points.
And as the last collecting tip I would add: if you want to ask something in the forum about a certain piece, please, please, please read the posting requirements, put an adequate title and add pictures, there are so many dead posts(and users) because of that.
Please feel free to comment and add any more advice.