Hi Rafael,
And welcome to the boards. It's best to seek the appropriate section for each of your questions. This will get more focused responses.
Sometimes a search of the site (see the Search button on the upper right hand corner) will help you find places where your question has already been answered or discussed. It's a good idea to scroll through a few threads in each section and see what's there and read the rules for the section before posting. There's a lot here to take in, but it's one of the best resources around.
Again, welcome, and don't hesitate to ask for help if you need it.
-Debbie