Conjuego prompts you with a pronoun / verb / tense combination, and you give the missing conjugation. Click +1, +5, or +10 to briefly "learn" some new verbs. Click Go! to practice the verbs you have learned. Conjuego remembers the verbs you have learned, so for best results, practice a little each day, learning new verbs when you feel comfortable.
Much as I love to have a pan bubbling away on the stove, I often feel that the most stress free way to feed people is by taking the oven route. When I'm frazzled, I firmly believe that the tray-bake is the safest way to go. Enjoy the easefulness of the oven: you just bung everything in, and you're done. I think I'd go to the supreme effort of laying on a green salad as well but, other than that, you may kick up your flamenco heels and enjoy the fiesta.