Even though becoming an EMT-B seems cool and interesting to me..
If that is the best motivation you can find for being an EMT, then just forget about it. The "cool" wears off very fast. Once that's gone, it's just a boring, tiring, low paying, hard working, zero respect, blue collar grunt job that has less training than a nurses aide and less money too. There are darn few emergency jobs even available for EMTs in much of the country, leaving you with none of the "cool" jobs, but just simple private company, non-emergency transfer ambulance driver jobs, toting people to and from nursing homes all day long for money that will barely feed you, much less a family. Before you spend a dime on this, you need to do SERIOUS job market research in your area to find out what job, if any, that you can realistically get with an EMT certificate. Despite the smoke they blow up your skirt at the school, it's probably not good.
I am not sure I can deal with it. I dont know if I have the stomach for blood , and stuff.
First, you don't see that very often, especially in the non-emergency job you're likely to be stuck with as an EMT. Second, few people actually ever have problems with that on the job. Standing around staring at blood as a bystander or movie watcher is a very different experience from being in the middle of it on the job. As a medical provider, you are generally too busy and focused on your functions to dwell on what you are seeing. It's the same thing as car sickness. The driver never gets car sick, only the passengers. That's because of the focus necessary. It is a very rare person that finds they cannot deal with it. I wouldn't worry about it.
What do you recommend? Is there a video or book, I can read and get more information on this career?
No, there isn't. Nothing in print or even on film that can convey the reality with any accuracy. You just have to do it. I second the recommendation that you check with 911 emergency ambulance providers in your area, be honest with them about what you are considering, and ask about a ride-along or two to see what it's all about. While you're there, ask them if they even hire new EMTs. Chances are, they do not. So then I would go to the non-emergency transfer ambulance companies and ask to ride along with them to see what you are REALLY getting into. Chances are you won't like it.
EMT is nothing more than three weeks of advanced first aid training. It's no big deal. If you take it and then think it isn't for you, what have you lost? Take the knowledge with you for life and move on.
All that said, if "cool" and "interesting" are your only motivating factors, just move on. This isn't the field for you. This is about medicine, the intellectual pursuit of the healing sciences and arts. It's not about sirens, or uniforms, or driving fast, or glory. And it certainly isn't about making a living or having a job, because there are a LOT easier jobs to get that pay a LOT more, get treated better, and don't wear you out in five years or less. The truth is that most EMT graduates never even get an EMS job. And those who do rarely stay in the field for even five years. If you intend to make a career out of it, then you're going to need to spend over two years in college becoming a paramedic, as well as live in an area that is not exclusively staffed by firemen.