The "I'll" pattern of course, it means the same thing as the "I will." It's only the contraction.

当然，“I'll” 与 “I will” 句型都表达同样的意思。前者仅仅只是后者的缩写形式。

I will 课堂 - SpeakingMax英语口语达人

Also you will often use a contraction. Instead of saying "you have" you'll say "you've."

你也会经常用到缩写的形式，一般我们会说“you've”而不是“you have”。

have to 课堂 - SpeakingMax英语口语达人

Of course, "I'd like" is just a contraction of "I would like".

当然，“I'd like”只是“I would like”的缩写形式。

I'd like 课堂 - SpeakingMax英语口语达人

Of course "I didn't" is just a contraction of "I did not",

当然，“I didn't”是“I did not”的缩写形式。

I didn't 课堂 - SpeakingMax英语口语达人

Of course, I'll is only a contraction of I will,

当然，“I'll”只是“I will”的缩写形式。

I will 课堂 - SpeakingMax英语口语达人

Of course "I can't" is also a contraction.

当然，“I can't”也是一种缩写形式。

I can't 课堂 - SpeakingMax英语口语达人