Ou8 has good questions that need answered. and her new growth color looks great--i'd start feeding her a little bit (and up-pot her, but not too big). you're doing a great job! good luck with your grow
You need something like ROOTS ORGANIC for your medium, it is well draining and is full of good stuff. Nutes is pretty much up to you but I have found that Fox Farms Grow Big and Big Bud will get you through your first grow without too much of a chance of burning your plants. And buy yourself a TDS meter. I got mine for like 25 bucks. Its the TDS-3. Run your grow nutes at about 900-1000ppm and flower nutes at 1300-1400ppm. Ph of your water should be tested to see if it is stable. If it is stable then you will only need to buy ph up or ph down. For a soil grow a simple ph test kit would be fine. They are only like 7 bucks. And keep your ph around 6 you should be good. Good air flow is important too. Good Luck Dude
I honestly just put them in to the solo cups from a little planter thing. The solo cup is about twice the size of what they were in so hopefully they will like it a little more. And also is it a good time to start adding the nutrieants?