Live lesson vol.2

I would use the word "whaling" there. The problem is that whales are not in fact fish, so the term "fishing" does not really apply.

During the lesson I improved my vocabolary vocabulary with some new expressions:

Remember that this happened during the lesson, so it's in the past. Therefore you need to use the past form; improved rather than improve.
debate, that means talking;

Yes and no. Having a debate does involve talking, but it also involves putting forward collections of arguments in support of a point of view. It is usually (not always, but usually) done in a more formal setting like a parliament.
decade, that means 10 years;
brunt of, that means impact;

Also yes and no. It actually means the worst part of the impact.
vessels, that means big boats;

Remember that if one noun that you use for something is plural, the other one needs to be as well. Therefore you need to use "boats"

wholehartedly, Wholeheartedly: that means with all one's heart.

The teacher also teached taught me some pronunciations tips also.

1/ Although a lot of past forms end in -ed, many don't. Teach and taught is one example of this. 2/ "Pronunciation" is just an adjective here, describing what type of tips they were. In Italian, adjectives have to agree in number with nouns; for example buoni suggerimenti. That does not apply to English, though. Generally the adjectives do not change form. 3/ I relocated "also"; it would be more common to find it at the front.

We talked about the different dictation of some common words like bear, beer, bee, dear, deer, beach and sheet.

I'm not sure whether you meant dictation there. You may have; it would apply if he was reading out the words, and you had to write them down. It may have still been more about the spelling than the dictation as such.

See you at the next class!

You're progressing well.

Live lesson vol.2

Very Good, keep it up.