Spindly Seedlings

Spindly Seedlings

I have plans for a big vegetable garden. I started my seeds two weeks ago and have already had some quick germination. A little too quick considering the frosty weather in NY and the less than optimal light my house receives from windows. So now some of my beloved seedlings are starting to look spindly. I've been researching lights, but I am utterly confused. I need lights that are as inexpensive as possible, I need a lot of them...and as strong as possible. So, if you use lights, what type do you recommend and how much should I be prepared to spend? Thanks so much!
rearrangement!

rearrangement!

Weed ID

Weed ID

Gingerbread Train

Gingerbread Train

As of June 27th

As of June 27th

Rambler with dahlias

Rambler with dahlias

Poinsettas

Poinsettas