My husband is – or rather “were” – working on a blog about movies: http://www.koivoir.com/ – you can take a look, just for inspiration. It's in French.
There are possibilities with movies. You can write about them and have an affiliate link to Amazon. Affiliate means that you recommend their products, and you get paid a pourcentage for you favour.
You can also put up AdSense – Google ads – but I recommend you wait until you have at least 10 postings on your blog.
Now as for your blog… You can create one for free and with the rights to put ads on at www.blogger.com, like we talked about.
It's easy to put AdSense on there afterwards, since Google now own Blogger. But lets talk about AdSense later.
I propose that you chose the keywords, you want to attack. Keywords are the words, people use to find informations in a search engine. If you can find two-three keywords, you have the name of your blog.
Now, to learn about keywords alone takes a lot of time, so this will only be a brief introduction. A good rule of thumb is: what would you search for, if you were to find the kind of information you'll write about?
You have this tool here for free: https://adwords.google.com/select/KeywordToolExternal
Put in a main keyword like “movie” and see what comes out. Don't forget to choose English as language, and all areas for country.
You'll be able to see how many searches there has been on Google for last month and in average.
Do you see anything with a reasonable number of searches, and which you would like to write about?
Tell me about it in the comments. Only you will be able to see this post.
You could also try kombinations of keywords like “best movie”, and there you'll have “best cult movie” and other stuff. If you specialise, you have a bigger change of getting read, because you'll have less competition.
After that you should get a blog at blogger.com with the keywords in the URL and title, like bestcultmovie.blogspot.com or whatever you chose, but you can wait with this step, if you don't feel comfortable about your choice.
Just remember: there is no perfect choice. And it's not always the choise you think is the best that actually is the best. Even expert Internet Marketers are wrong much of the time. What makes the difference between them and people not having success is that they take action.
That's the most important thing at all: take action.
Now enought for lesson one. Let me hear in the comments, how you do.