Interested/ interesting. please

English as a Second Language English Vocabulary, Grammar and Idioms
1
  1. I find the lesson interesting.
    => I am interested to the lesson.
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2

These are possible:

I’m interested in the lesson.
I find the lesson interesting.
This is an interesting lesson.
I have great interest in this lesson.
I’m following the lesson with great interest.

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3

‘Interesting’ is a purely descriptive state and ‘interested’ is the active state -

I am interested in something which is interesting.

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The word interest takes the preposition in which may be called the ready-made preposition as in the examples provided by Torsten and Alan.

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