It can only apply to ABC who grew up with Cantonese and to learn Mandarin, vice versa, I reckon. In this case, that would be beneficial to learn a similar language. However, for the beginner learner with no fundament of those languages, it would be very confusing and kind of impossible. Regarding your background, all you can do is keep listening and talking so as to keep up the fluency

Once again, both are ok depends on the situation. it's similar to the English word ''object'' (noun), object (verb). For example, if u say the noun basketball, it would be ''laam4''球, however, if u want to describe the state of the movement that u shoot the ball from your hand to the basket(射籃), then it becomes 射''laam2'' Another example, if u are carrying something with a basket(籃), in this case, both are ok but I personally would say ''laam2'' because it's more natural. A little tip for you, if I were you, I would just ignore this part in this stage because it's just overwhelming. it's just a minor accent problem. Widening your vocabulary, forming a correct sentence structure are the most important parts. U won't have any communication barrier as soon as u get these 2 parts done. The final step is to correct your accent a bit to go native. This is what I'm exactly doing in learning English.

I'm not offending anyone but I would say ''git3 gau3'' is the right one. However, both of them are completely fine and u can say both. According to the theory, ''git3 gau3'' is the right one, however, I think more than 80% of native Cantonese speakers speak the wrong one unless those people who have studied a degree in Cantonese. How native speaker learning Cantonese is to 'hear and say'. We don't even learn the theory and some of the school don't teach the theory at all. People say it wrong day after day so it becomes more commonly to use. I personally say that words in the wrong way. I think only the fussy people will criticise you. Other than that, it's utterly fine to say the both. I'm not encouraging you to learn the wrong thing. It's what we call 'modern language' though.

First of all, im going to give you 80 marks out of 100 as I can fully understand what you express. U did it quite well, however, the sentences structure are too written way. Im not saying written language isnt important but oral language is always more appropriate in day to day conversation. Talking in written language is like a lawyer doing the statement in the court. It's just too formal, a bit boring and kind of weird.

Becoz your Mandarin is quite good so I can find that your translation of this article is all based on your Mandarin knowledge and it makes you translate it directly. The amendment below is a typical oral language with some slang words.

做生意

郵差派信的時間就是我回到家的時間=郵差派信o既時間通常係我番到屋企o既時間 * Hongkong people always put the radical 口on the left of some words, it will slight change the pronunciation. Most of these words you cant find in the dictionary.

By the way, there are some funny slangs commonly used by teens. Adding ed or ing after the words. e.g. 食飯ed means i ate, 食飯ing means im eating.

所以我幾乎每天都能欣賞爸爸分信的過程=我每次都好享受睇爸爸將信分類. "NOT necessary to add 所以in here becoz both sentences are not interrelated. To adding 所以, the first sentence should be a reason that causes the second sentence to occur an action.                   e.g. I love her 所以I date her. I dont like her 所以I dont talk to her.

奇怪的是，他今天一打開了信封就馬上把信撕成碎快=奇怪o既係,佢今日一打開封信就即刻撕成碎片
呢間死公司又黎傢伙啦=又係呢間死人公司//FYI, i would say damn=死人, not really a foul language but can express your anger, for me, I personally like to say fuxking company=仆街公司
『咩黎架爸爸...』
『火葬呀！』
果然是一封賣很特別的廣告的信，而且是今年內已經收到的第三張=果然係一封好特別o既廣告信,而且係今年第三次收到

爸爸嘟嘟哝哝地離開做別的事，而八卦的我把信的幾塊從垃圾桶撈出來。爸爸暗暗尋尋咁行開左做其他野,而八卦o既我就從垃圾桶拎出黎睇  *暗暗尋尋=喃喃自語in Mandarin

纸色棕褐，眉批上的玫瑰褪色而焦黃，整個包裝一看就有種死亡離人不遠的感覺=深啡色o既紙,加上頂部果o的褪色又冇黎神氣o既玫瑰,整體個設計散發住死亡離人不遠o既感覺    *冇=無

最讓人抬眉的是信上的第一句：『時間不為人靜止』。=信上第一句寫住: 時間係唔會停低等人

死亡是棘手的事，所以我继续读下去，本人非常好奇這種服务是怎麼賣的。=死亡是件棘手o既事,所以我继续读落去, 我非常好奇呢間公司點幫佢o既服務賣廣告//*佢is a pronoun equivalent to he she it  (I didnt really translate this sentence well becoz i didnt get the exact meaning from the English version)

其內容總結如下：在我们沒有留意之下，时间一直流动而一年一年很快就過去了。為了去世前能得到安心，這種事應該提早處理。=其內容總結如下：時間o係我地唔經唔覺咁過去, 處理好呢o的事會令我地得到安心

最後的一句讓我心裡暗笑 :『此信如帶給您不便，我們表示歉意。=封信最尾有句收辭(rhetoric): 如果此信為你帶黎不便,我地表示歉意

看起來做這種生意不容易啊！=睇起黎做呢種生意唔容易啊


(今天的寫作查了很多次字典，有些用詞我不太清楚用的適不適合我想要的色调。我把英語文本放在下面，如果你能幫幫看一下就非常感謝你！)
今日寫呢篇文章我查左好多次字典,有o的字我唔太肯定用得o岩唔o岩,我將英文版本放係下面,超級感謝你如果可以幫我睇一下

Andy: your are welcome, HAHA

Normally, 看means see, watch, look. Those are the actions related to your eyes However, sometimes it implies the meaning of " let's see", "rely on", "depend on" In this situation: 等着, (看我的) = Hang on, (let's see), it's my turn to do the task. 该准备的都准备了,(下面的工作就看你的了) = I have prepared what I can do, (I'm relying on you for the following task) 要不要找老板去计较,(就看她自己的吧)= Whether to discuss with boss or not, (let's see what she decides to do) 握" 和 "捧 are the actions related to your hand and they both mean "HOLD" in English however, they are totally different in usage. When you are on the bus, you hold(握) the handle with your hand. When you make a "basket shade" with your hand, you hold(捧) something in your hand.