Here are a few things that will help any newbie blaster working their way up to 50:
Mobility is key - Some blasters prefer ranged, some are forced to go up close to unleash their pbaoes. One thing stays constant - if you don't move you will die. Mobility helps you get out of line of sight if things get hairy, mobility helps confuse mob AI. I highly recommend taking combat jumping for combat effectiveness. I don't see any value in hover at all for combat during the early levels, mobs will out range you, hover is slow, and hover doesn't protect you from immobilization.
Get Super speed and a stealth IO - Complete invisibility for setting up your alpha strikes. Also Super speed pairs well with combat jumping for more mobility.
Use line of sight (LOS) - This is so important. If mobs can't target you they have to chase you, giving you precious time to pop inspirations/recover/run away.
Learn to joust - Let's say you are in a +2/+8 council mission and that tank's got aggro and you got all these delicious pbaoes you want to unleash on that mob, what do you do? Stand right next to the tank and eat all the mob AOEs before you faceplant? You'll be lucky if you don't die after the first pbaoe mid animation. Same scenario have you ever build up/aim, run into a mob and get ready to inferno, and "oh I'm locked in animation and I'm getting shot, crap I'm dead." Jousting PBAOEs should be second nature when you have next to no personal mitigation. Practice this with low level mobs, stand in the middle of the pack, jump back, as you jump back hit your pbaoe, time the jump and the attack so that the attack happens almost immediately after the jump. If you do it right you'll be a good distance away from the pack. If you have super speed on you can be even farther.
Learn when not to attack - On teams it maybe wise to stop attacking if you are in trouble and let your teammates grab some of that aggro, run out of LOS, recover, lose some aggro and come back and fight again.
Purple inspirations are your friend - Not awakens. Combine all your other inspirations into purples and learn to use them. If you anticipate trouble pop two or three, if things get hairy pop two or three. Awakens are not a blasters best friend, that's something inexperienced blasters say.
To those people that say you have to wait till epics for your fire/fire to rock, not true. It can be awesome at any level.
If you can play a blaster well you can play any other non-support AT well.