Welcome to Steemit @rafk
It feels good to have a mechanical engineer and programmer join our team.
The first step to becoming a successful steemian is to READ. As such, I encourage you to take your time and read this: https://steemit.com/hive-172186/@cryptokannon/notice-board-of-newcomers-community-updated-2-june-2021
Next, I want you to follow me (@thegreens), @steemitblog, @steemitnursery and @steem-cameroon for very interesting updates and opportunities.
Join Steemit Nursery, Newcommers Community and Steem Cameroon to get all the warmth and support you need as a newbie.
Please follow this link to Join Steem Cameroon WhatsApp Group: https://chat.whatsapp.com/Lhq3wWO5HqmL5QBrPBXw8B
I put together a few tips on how you can become a successful steemian which you can read here:

1. How to become a successful steemian Part 1
2. How to become a successful steemian Part 2
   You can participate in any of these contests organized by @thegreens;
3. The Power Up Challenge
4. Creative Writing Contest
5. Green Deeds Contest

I will be following very closely to review and curate all your blog posts while giving you the feedback you need to be better and successful steemian.
Welcome!