… And it’s goodbye from Ele' for today. What are your plans for the weekend?

I plan on working all day Saturday (I will be spending this day trying to make as much money as possible in preparation for a trip I'm taking on the first of January) and then on Sunday I am going to take that day for myself and just relax and do whatever I feel like doing. That is pretty much my plan.

--- Very good. Two small corrections. First, your initial sentence is a run-on sentence and should be separated into three sentences, as shown below. Finally, in proper English, we have a special name for phrases such as "pretty much". We call them "weasel words". This means that your statement, while intended to be specific, is actually vague. Weasel words are to be avoided. Given those two comments, plus a few minor grammar corrections, we get the following:

I plan on working all day Saturday. I will spend this day trying to make as much money as possible to prepare for a trip I'm taking on the first of January. Then, on Sunday, I am going to take the day for myself, relax, and do whatever I feel like doing. That is my plan.

What does this mean?

Hi everyone! I can't understand the last sentence, particularly the part 'crack one open' .
"Like me, you might have a nice collection of dusty Berlitz phrasebooks hanging out in your garage, left over from your last European vacation. You might even crack one open to learn to say (unintelligible) SCIENCE FRIDAY."

(http://www.npr.org/2011/02/25/134059279/being-bilingual-not-only-a-boon-for-native-tongues)

A "Berlitz phrasebook" is a book that contains commonly used phrases in some other languages. I do not know if they are available in other countries, but they are common in the USA and marketed for travellers who will not take the time to actually learn a foreign language before the travelers visit a country.

The "unintelligible" part is in a non-English language. I'm not certain, but I suspect that it is Italian.

The "Crack one open" means that you will find a specific phrasebook for a specific langauge and search for a particular phrase in that phrasebook.

Learning English.

I want to learn to read in English without mental translation. Every time I read something in English I always do the translation for my language. Also, when I hear English, first I translation for Portuguese for only then I understand what was said. It is exhausting, frustrating for me. Some say it takes time to reaches this. That may be so. I'm going to practice more. I know I can do this. Anyone has some tips to give me, please let me know.

I want to learn English without mental translation. That is, I want to think in English. Each time I read something in English, I must first translate it to my native language. Also, whenever I hear English, first I must translate it to Portuguese, before I can understand what was said. This is exhausting and frustrating for me. Some say that it takes time to reach my goal. That may be so. I'm going to practice more. I know I can do this. If anyone has some tips to give me, please let me know.

-- very good attempt. Immersing yourself in the language, or chatting at length every day is your best goal to improve your fluency.

Informal slang. Usually said by a man to a woman. But this phrase is not really current. The phrase was current in the 1980s and 1990s.

It basically means the same thing as "hi! what's up?" Although a more exact translation would be "hi sexy lady! what are you doing?"

.....

Неофициальный сленг. Обычно говорит человек к женщине. Но эта фраза на самом деле не ток. Фраза была тока в 1980-х и 1990-х годов.

Это в основном означает то же самое, что и "привет! Как дела?" Хотя более точный перевод будет "привет сексуальная леди! Что ты делаешь?"