Actually, avoid kits! While they are convinient, you can usually get better quality/pricing by buying separate. If you want to go with flash, here is my kit:
What You'll Need...
3x Yongnuo YN-560 Speedlites, $45 Each: I mount them off camera usually one to my left and one to my right, play with angles until you get the right look. The third I will use either as backlighting or with a beautify dish from above that I have set to a different channel. Then when shooting I have the choice to either use the side lights only, the beauty dish light only, or all three (which is a rarity). Having flexibility is key here! The more lights you have the more you can play with, and these are cheap and easy to use and I personally think they are great quality. Dropped one down a flight of stairs once and nothing happened to it!
2x Westcott 43" Umbrella and Stand Kit, $70 each: For the two side lights. These are nice, durable stands that fold down small for easy portability. The umbrellas are my favorite size personally, and I wouldn't recommend going any smaller. 60" umbrellas are even better, but I don't have the space for two of those in my studio.
2x Yongnuo RF-603 Wireless Triggers $29, each: You'll want to buy two of these kits. One mounts onto your camera and the other three mount to your lights and that's what triggers them. There are actually lots of wireless triggers out there like the Cactus V5s, RF-602s, and Cowboy Studio triggers that will work in smaller studio spaces. But cheaper ones like the Cowboy Studio triggers won't work as well outside or in larger spaces.
What You May Want...
1x Cowboy Studio Boom Stand $49: Not the greatest stand by any means, but the cheapest. If you have the money take a look at the Manfroto boom stand as it will last the longest and give you the least amount of grief. But if you decide hair light and beauty dishes aren't for you, this would just be a waste. So go cheap until you know.
Cowboy Studio Beauty Dish $32: Again a super cheap and not the greatest option to "try" in case you don't like the look.
Eneloop Batteries... Lots of Them!: Without plenty of battery power you're not going to get much done. Eneloops are my favorite rechargeables by far. I own three of the kits now. $40 each.
So that's a very basic kit that will actually serve you well for a long time. You can grow and change and adapt to what your preferences are when you get to learn lighting more. But I've been using this kit for years and love it.