Hello there 
I may not be able to answers all your question but i will try as much as possible to answer some of them base on my research and experience here so far.
How much is the POB or how much is the pob exchange rate to a dollar?
How many POB makes a dollar?
The price of POB varies it is not stable but current price to dollar is around 0.2544
Aside writing and posting content, what is the other means of generating POB’s and Hive on the platform.
Aside writing and post your quality content, another way you earn POB token is by engaging in other people's post with quality comments, most times you will upvotes from those your coments.
Another way is that when you have accumulate Some numbers POB token try and stake them so that you can get voting power and when you vote on people's post you will earn curator rewards from there.
Lastly you can also delegate your POB to any curator of your choice at the end of the day you will earn some interest on it.
It’s unfortunate I try to avoid some people but I realize my vote didn’t count, why is that so?
I do not understand what you mean by avoiding some people but i think the reason your votes dose not count yet is because you not have voting power yet, so work on earning POB then stake so you can vote for people.
How do I get followers and what is the advantage of having a lot followers.
You can get followers by posting interesting posts, people that enjoyed your post will definitely follow your user name. And you make post you will need followers to see and interact with your posts.
What is staking.
Staking is a way of investing your POB or hive in the community there it gives you influence to vote for post and earn from it.
What is Delegation?
Delegation means you transfer you POB token to a curator and get some returns a the end of the day.
What are the best tags for this kind of post, I will be gladden if you can write a ten tag each for this kind of post.
I'm still learning about tags myself, but i think you can use the following tags for this kind of post; proofofbrain, broadhive, ccc,hustler, pobdaily.
RE: How exactly does the PROOF OF BRAIN (pob) and Hive works?