Ultimate Blog Marketing

i use my blog keyword in google search .After searching with my keyword i saw my blog in the first place in search result.Can we say such keyword is the good keyword

So that i can place ads on my website and make money??

I made a blog with one post and there is one youtube video promoting it. I made it about 2 weeks ago and I’ve made 14 cents(lol).
Is this a good start and is it worth it to pursue this blog?

im talking from home on the computer?

if you make a website about sex . not porno but sex.it tells you how to have sex and risk,condoms etc,does google adsense support that or will they refuse to deal with it?