It's amazing just how resilient there plants are! You can put them through hell, and they usually bounce right back.

I started out indoors with T-12 fluorescent tubes and CFL's. Don't believe the Flouro/CFL haters, you can grow really nice plants with them. You will need several CFL's for each plant for the best results though. I still use CFL's for supplemental side lighting. If you're using a regular incandescent light bulb, it would be best if you switch to something better as soon as you can. As you're already observing, the plant is stretching quite a bit. That's most likely because the bulb isn't producing the proper light spectrum. In this stage of growth (Veg) the plant needs more blue light. As Adiitaff said, if you can get your hands on some CFL's in the 6500K range, you'll be good. 5000K also work pretty well, but 6500K are better.

Did I read that you put some goat manure in with your plant?? It's really not a good idea to use any kind of un-composted (fresh) manures. I don't recall the reasons why, but I'm positive it's N/G. You might not want to do that anymore. Also, different manures have different NPK ratios so be sure to use the right ones at the proper stage of plant growth. For instance, while it's good during Vegetative growth, you wouldn't want to use goat manure during the flowering stage.
Here's a link for some manure NPK values:
NPK Values in manures

Can you get your hands on a thermometer and a hygrometer? They're imo the two most important tools for an indoor grower. You'll have the best, fastest growth in Veg if you can keep your temps below 78 degrees, and humidity over 55%.

Crap, I gotta run. I'll try to stop back later.

Gnatty