Welcome Tuan!
A cornering course sounds like a great idea, as does reading and talking to good riders. Be wary of free advice (like mine) because no one knows where you are at or exactly what you need, and there's a lot of self-proclaimed experts in the motorbike world.
![Wink ;)](./images/smilies/icon_wink.gif)
Two cornering techniques to practice are:
1. LOOK WHERE YOU WANT TO GO.
Actually turn your head, and focus your eyes up ahead and where you are going to go in the corner and exit as it approaches...... Keep moving them out in front as you go around the corner.
2. ENTER YOUR CORNER NICE AND STEADILY, APPLY ABOVE METHOD, LEAN THE THING, KEEP IT LEANED!!!!! AND GET SLIGHT TO MODERATE THROTTLE ON
Unless you REALLY stuff it up
![Very Happy :D](./images/smilies/icon_biggrin.gif)
whatever speed you enter the corner at, it will stick! and it will stick better believe it or not if your get the throttle on SMOOTHLY.
This will also help you improve your feel and confidence on the bike in the corner and help you to guage what's a comfortable speed for you in corners.
TIM.