If your just starting out,realize the most people have no idea what they "really" want or where they're really going other than knowing in a few years they will have memories of an amazing journey that took not only themselves but the network of thousands of others to complete, prepare for, and endure.
You then need a vehicle to get there and once there, you need a way to organize what you need to figure out and then you need to start treadmill work to get there.
Don't take shortcuts, the treadmill is the only way to reach expert and rake in the big money. The work is vital and very necessary.
The work you do is both to make money BUT more-so to learn the realm- this is an on the job training career path. Many approach it from the offline working world mentality and think that starting this path means getting a weekly paycheck you can count on for "time" served.
The reality is at first there is very little pay if even enough for a check. It's a path that can become incredibly fruitful but it's not always going to be easy. In fact at hard it's anything but easy.
By don't have expectations I mean you shouldn't be rigid in your goals. Make goals but be ready to change the resource path if it becomes necessary. The pay comes later- the learning to write and monetize your writing- comes first.
You should be in it for the college of thought- a skill-set that will make the internet practically your own ATM as there are plenty of writing mills, web 2.0 sites, and other ways to earn online once you've gone through the work of figuring out the treadmill first.
Don't be an all work and no play kind of worker bee. Be a "this is a fascinating realm and I want to know more- and grow a little bit each day"- kind of person and you'll thrive and won't feel the work portion of it (too much).
Don't be in any kind of a hurry, it's not going to happen fast- it could take a year just to get your feet wet but in that year you could learn and grow a lot! It all starts with writing!