HI ya Juan Francisco Mollinedo ...
Welcome to the FSM Community Modeling Forum(s).
I am glad that you stopped by and joined up. You will find that we are a very friendly and diverse group of modelers from all points of the compass.
I hope you will spend quite some time here ... reading a lot ... posting a lot ... and putting your 2 cents worth in from time to time. For you see ... joining in is one of the most important parts of this scale modeling site.
I am sorry ... I don't know off hand where you can pick up those missing back issues of FSM ... you might get a response from someone here on the Forum(s) or you might try one of the online sale/auction sites like eBay.com.
Good luck, and again ... welcome!!!