Recommendations - Mixing Multiple Angles Of Concert Into Single Video

Hey everyone! I use to film concerts 15+ years ago and I recently digitized all my Video8, Digital8 and MiniDV master tapes. Most of the formats are now in DVD/VOB files on my hard drive. A lot of the shows have multiple angles and were never mixed. I'd like to find a good program to mix these angles into a single video. Could anybody recommend a good program to do this in (Linux or Windows)? And any good tutorials?

Thank you in advance!