Corrections in red.  Stylistics in blue.

Russian words consist of...

Hello, everyone!
I am Sergey, and I'm a language exchange partner. I would like to show you the structure of Russian words.
I have divided my talk into three parts.
First, I'll show you the main parts of words, then we'll discuss how to write them on the paper, and finally we'll look at examples.
My talk will take about 15 minutes, but I'm happy to take questions at any stage.
Okay, so let's start with main parts of words.
There are four main parts - приставка (prefix), корень (root), суффикс (suffix) and окончание (ending).
The main part of a word is the root - корень. There is may be one or several prefixes before the root.
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Right.  So let's move on to the second part of my presentation.
In the second part of my presentation, I want to show you how to indicate the main parts of words on the paper.
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So, that concludes the second part. Now moving on to examples.
Let's take a look at "лесной", "прочитать", "сходил", "перевёз".
Who wants to deconstruct them? What is the root?
Okay, very good.
To conclude, I'd like to summarise the key points. Russian words consist of four main parts, and those parts can be used several times.
The ability to see the structure of a word and understanding what it means helps you to write words correctly.
This is the end of my presentation, and I would like to invite any questions you may have.