I would suggest:
1.
Premiere Pro - good but huge learning curve and big $$
Ulead VideoStudio/Pinnacle Studio/Sony Vegas Video - good programs for basic importing, capturing, and editing
2.3.4.
IMGBurn - great freeware burner. Nero is good but bloatware and IMGBurn is better at layer breaks for DVD-9's.
Other points:
- Agree with comment about NOT "just buy a Mac". In fact, in the early days, the Macs didn't even have a decent DVD burning program
- There's a lot more to "import video from DVD and edit". Actually quite complicated unless you built your own VOB structure
- Any noob authoring program will probably work for you to "author" your DVD. (eg. Ulead DVD Creator, etc)
- One of the best authoring programs out there is DVDLab Pro