VB 6 vs. VB.NET

It depends on what is the purpose of learning it. For example, if you're learning it for a job and you need it NOW, then VB6 would be a good start since VB.NET is not fully deployed to the world (people are still looking at the stability, accessing the impact and other factors). Most likely employers are seeking for VB6 although having VB.NET is always a plus.

If this just as a hobby, then go for VB.NET. You can take your time to learn it.

If this is for college ... then of course follow the study course :)

The reason is, VB6 and VB.NET are totally different. Basic language structures are the same (IF...THEN...ELSE... END works the same way) but VB.NET implements something totally new ... .NET Framework.

Just my two cents,
-Cool Bizs