Do yourself a favour and use a medium size ship at least, the smaller ones get thrown about a lot more. Also, there is almost no danger as long as you use Neutron Stars exclusively, they have a much better jump boost and are 100 times less dangerous because the jet-cone extends much further out beyond the SC drop point. Not a lot of point practicing something considerably harder when it is impractical for travel anyway.
The procedure is simple:
1) Make sure you have a fuel scoop equipped.
2) Jump into system and zero throttle.
3) Look to see which jet-cone is on your side of the star and travel towards the end of it slowly at 90o.
4) When you get close enough that it occupies a fair portion of your screen pull away from the star so that you enter the jetcone at a shallow angle and low speed.
5) Zero your throttle when inside, charging will only take a few seconds.
6) If you leave the jet-cone before you are fully charged simply start again at 3.
edit ps, the closest Neutron star I'm aware of is at Lalande 25224, about 300ly above Diaguandri