R1766U has it right. Keep it for entertainment purposes only and don't think you are going to jump in and make money. Of course you may get lucky and win something, but keep in mind that you are playing against groups of people who using software to create multiple lineups.
Fanduel, Draftkings and other DFS sites have a lot of players playing for a living, most of whom were playing poker for a living and switched to DFS. These are seriously smart people who have dedicated their work weeks to creating lineups.
With that said there is money to be made because the onslaught of advertisements has brought a lot of new blood into the games. DFS parallels poker in that you play against other people and you only have to be better then them. The problem is that in the GPPs, the good players put in a ton of entries (muli-entry tournaments) so your 1 or 2 entries is going up against a ton of good teams. Think if you enter a poker tourney and have to beat the same pro 500 times, that is what you have to do in a GPP.
DFS has 2 types of games 50/50s (cash games) and Guaranteed Prize Pools (GPPs). The GPPs like the the DraftKings and Fanduel millionaire makers pay a lot but you are competing against 400,000 plus entries with the elite genius's putting 500 or more lineups. Again you can get lucky in these, but don't count on it.
With the cash games, you only have to beat half the field. My advice is to play the 50/50s to try to build a bankroll, and the GPPs for fun.
In general you want high floor players in the cash games and high ceiling/low owned percentage player in GPPs.
Good luck.