After effects is an amazing program "if you can understand how to use it" but it's 899 USD but you may download a 30-day freetrial at the website, camtasia studio 6 is another awesome program it's...
NO, All AVS software products are shareware and do require activation beyond the trial period.
Well, it is a good program but mostly Sony Vegas is more popular to make Toontown Videos, so no, I don't think its a good editor to use. :)
You could try VDownloader.
Maybe, just try it