Hello @amir-el! This is @jcrodriguez from the @OCD team. Welcome to hive!
You can explore the communities that you may like in this post: OCD Communities Incubation Program. There is a wide variety of topics. Check out all the communities.
If you are looking for tips and information as a Hive newbie, click here: newbie guide. They are easy to understand and useful for learning how the platform ecosystem works.
You may encounter RC (Resource Credits) issues when trying to comment/post because you don't have enough Hive Power in your account yet. You can fix this with a one week temporary delegation through the Gift Giver Site. Another solution is for the person who recommended Hive to delegate some Hive Power to you.
Please be aware that Hive is a bit different from other social media platforms since you are monetizing your blog, so it is important not to include content that you don't own without sources (and it shouldn't exceed 50% of the post). For more information, check this post - Why and How People Abuse and Plagiarise by hivewatchers.
If you have questions or concerns, you can hop into OCD's Discord server and we'll gladly answer your questions.