Welcome to the world of SteemIt! After reading your introduction post, I think you will like it here. If you come in deciding to be part of the community, you will do fine. There is a saying around here, "Come for the money; stay for the community." You have already decided to be here for reasons other than money so you are half way there.
One of the things that will help you grow here in the world of SteemIt is to remember that community is the reason this is such an amazing place to be. To get involved in that community you want to read what everyone is writing and you want to comment, sincerely comment on what you have read. This helps to get your name out there and helps people get to know you in addition to your blog posts and videos. Comment, comment, comment is what we encourage to grow in this community. However, being new you probably have a low Steem Power (SP) which means you will have a voting power and low resource credits. (You can find that information here: https://steemd.com/@yournameHERE). The key is, while you are so low in SP, to keep your Resource Credit number to about 80%. Here's a great article by @welcomewagon to explain why: https://steemit.com/welcomewagon/@welcomewagon/80-why-you-need-to-know-it
The same is with your voting power. If you are like we were when we began, we thought the "upvote" was like Facebook's "like" button. It is, but it holds a lot more weight because you are actually paying someone Steem (money) for their work. Because of that, you don't want to push the vote button for every post you read; only vote if it really is good quality and content you truly enjoyed. Here is a video by @sethlinson that might help explain it a bit better:
We hope this helps you get around easier. You are always welcomed to ask us questions and if we don't know the answer, we will get you to someone who can. Welcome to the SteemIt Community and can't wait to see what you have in store for us all!