Well Mr. Pinger,
you have found plenty of buttons in this Forum already. If you would read the little words above your first posting and click on the word faq you will see a new window opening. There you will find all the explanations you are looking for.
This is what I said before.
And if you do not understand the meaning of faq, than don't use it, it means
Frequently
Asked
Questions.
To answer your next question: Yes, sometimes...
To answer the question of you next posting, a link is redirection of your browser initiated by clicking on a word or button to help users during navigation on a website.
Newbies, as you claim to be one of them, should not misuse phrases they do not understand.
The way you replied is for sure an excellent example how a person with your occupation should reply.
Welcome to the world