what is the best anime to start

If you're just starting, I'd definitely choose one that's relatively short. As great as they are, don't start with the likes of Dragon ball, One piece, Naruto, etc. They're far too long. Those series frequently have filler as they are made simultaneously with the manga and need to stop whenever they caught up. The longest series I'd recommend for a starting anime will be Fullmetal Alchemis: Brotherhood, since they actually maintain the pacing well through the series.