Prasoeur,
As you asked for how to do to be good at giving full words to the abbreviations, what I can tell is that it's really about:
1- Are u curious :?: enough to find out what it really stands for when u see an abbreviation, based on self research or asking ppl, you should try to seek the full words. Dont just let it pass u by.
2- How often :?: you see the abbreviation. Again and again when u see it, it'll easily come to ur mind what it is.
3- How well :?: you remember it. Some people really have a good memory. They are able to store new words although they first see them. If you are this type of person, then you wont have worry

Though, it's not necessary to remember all the abbreviations as some of them wont be applied in our need of usage. You just need to remember some that you might think are important.
Note that some response I posted to above abbreviations are retrieved from the search engine as I dont have a good memory storage for them :wink: