First time using "italki"

Recently, I've got much information about "italki" through my friends I learned about italki from friends, coworkers, and, many advertisements from Youtube Youtube advertisements. These've These have interested me in this platform, so today I decided to write down my first essay on this website as a probation to try it out.

Recently, I've got much information about "italki" through my friends, coworker and many advertisements from Youtube. These've These have interested me in this platform, so today I decided to write down my first essay on this Website as a probation to try it out.

Notes:
- There isn't a contraction of "these've", although it may sound like that when people speak. 
- The word "probation" isn't typically used like this, it's used mostly for someone who did something wrong or new employees, at least in Am. E.  I suppose you mean something like a trial period.
- Your essay is completely understandable so I think it's a great first effort!