Looks like you've made some progress in the past few days - well done!

For now stick to FR. Pre-flop, stick to the premiums in early and middle position, add in a few more good hands in late position, and always open-raise. Post-flop, don't be afraid to fold if you think you're beat.

Remember that post-flop calling is often the worst play, especially if your post-flop skills are suspect. At 2NL, in most cases you should bet or raise if you think you're best, otherwise check/fold. And quit worrying about suckouts - they happen, but if you consistently get your money in while you're ahead you will finish up ahead. If you get sucked out, remind yourself that you actually played the hand well because you got your money in good, and if he keeps playing like that you will eventually take his stack.

Once you can beat 2NL/5NL consistently and have more experience in post-flop play, you can start to open up a little more.

Good luck!