Hi Mayar
Welcome to Steemit and nice to meet you :)
You wrote a nice introduction of yourself. I have some tips for you in order to further improve on Steemit and get started. Please read the following two guides that every newbie should read in order to know about different terminology used on Steemit platform or how the platform works and how to transfer your Steem that you earn from the platform to your external wallet, such as Bittrex (It's same for Poloniex as well).
The Beginner's Guide to Steemit
How to Transfer STEEM From Bittrex to Steemit
Moreover, there are several awesome communities that help the Steemians, especially the newcomers along the way. One of them is called @greetersguild, where you can get different type of support from the community, including an upvote support, and of course, learning from experienced Steemians. It is created by @terminallyill, and I would like to invite you to join us :) Here is the link to our discord server.
Oh, and you can use #greetersguild as one of your tags to get a possible upvote from @greetersguild on your quality post.
I hope to see you growing on Steemit :)