First piece of advice, read all you can for about 5 months...5 hours is nothing
It is not enough to stick pins into a list of names and hit the jackpot, you will need to know business, politics, geography, languages, psychology and a whole other multiples of "ologies" and that is just for starters
For example, if you are targeting the UK extension today you will have to know what kind of business the you are targeting, how much they spend on advertising and their local competition, you will have to know the particular language nuances (Yorkshire dialects are different to Lancashire), how people work and what they are likely thinking and also how it fits in with the rest of the world as a whole.
I must've read the CIA page hundreds of times by now...
Anyways, if you are adamant about trying this, stick to
exact product names to start, they will give you your best chance at making money..."baked beans" are definitely superior to "bakked beans" in any of the major extensions of .com, net, org, co.uk, de or even info.