Welcome to the Planted Tank Winfield, nice to have you!
Like jgc mentioned there are several options to get a 10 gal tank lit.
The simplest of them would be to take one of the black plastic hoods that have sockets for incandescent lights, and use two compact fluorescent bulbs in there. I lit my 10 gal tank with two 6500K 10W lamps (sold in WM pets aisle) and it was a nice inexpensive low light solution.
The next step up would be to use that same hood and gut it (or build some wood enclosure) and use a 2x 13W bright kit from AHSupply.com. This is what I have now and while some consider it low light, it let's you grow quite a bit of plants, and IMO requires CO2 and some fertilizer dosing.
For a high-light tank, you could use a 36W kit, along with regular dosing and CO2 that will allow you to grow most any plant or algae, in a very rapid fashion.
Regarding cover glasses, there are discussions, some use them, some don't. They take a little light, but I use them on all my tanks to keep moisture out of reflectors and electronic, to keep evaporation low, and to keep fish in the water.