So here's the deal:
Starter box armies are OK if you play against someone with a starter box army. Otherwise, they are pretty much rubbish. Now Privateer Press has changed those starter boxes and they will have new warcasters and warlocks, so things may change after June when the new edition (MK III) releases.
You are going to get your butt kicked and lose just about every game you play against a seasoned or veteran player until probably your 20+ game, and only if the other player is playing with rubbish. Then it might be your 30+ game. You just can't see all the synergy, the threat vectors, or the assassination vectors that are possible until you have experienced them. You have not been exposed to enough warcasters and warlocks to understand just what each one can do, much less why they took that particular warjack and solo combined with that unit and unit attachment. You won't understand why your opponent didn't charge last round until you realize he is scoring control points by standing where he is.
Don't lose heart. You will eventually win a game, and it will come as a huge surprise to you. After that, how much you win/lose will depend on how much you play and who you play.
Try to play an opponent that will walk you through his army selection- why he took that model, what does he expect this warcaster to do, etc. etc. Then during play, have your opponent explain to you why he is doing certain things. That will decrease your learning curve and increase your W/L ratio.
Remember it is just a game, and we play games to have fun. If you aren't having fun, than tell your opponent or find someone else to play. Unless you foolishly entered a tournament. Then just try to learn from getting your butt kicked.
Stick around long enough, and you will start to have fun, will understand whats going on, and may even win some games.