Usually you can't watch commercial television programs for free - at least, not legally. Of course, you may be able to get pirated copies and watch those, but at least in some countries, doing so is quite risky.
I always like to watch Negima on computer in English but not all of them are on the computer. I wanted to see them all in English.
Sidereel.com offers shows you can watch for free.
Crackle
fox.com
Go here and watch tv on your computer for free. See the related link below.
You watch blockbuster movies on your computer by putting a blockbuster DVD into your DVD player
First "Negima!" then the story is re-told in "negima!?" then the OVA's "Spring & Summer"
To date there are 32 tankōbon of Negima!, but as it is an ongoing series the volume count will increase in the future.
You can watch a movie on you laptop or computer for free by going to the related link.
go on to youtube and type the movie you want to watch!
There are 26 episodes in "Negima!" .
Lime wire is probably your best bet but you might get viruses.