Planets

Well, there really is no best order that you can take to do all the planets. So, to tell you the truth, you can go to each planet and complete the events on each planets whenever you want to do them. A good thing to do, would be to save the Sith World Korriban as the last place you visit, so go visit Korriban only after you have leveled up a lot, and beaten the quest missions on all the other planets. There is a reason for this, and the reason lies within a cave on Korriban. When you finally arrive at Korriban, head into the Wyrack Cave and then battle your way through everything until you reach the end of the cave, and the secret door. If you are strong enough then the door will open and you can go inside and fight the Jedi that lie within. You will fight Malak, Kreia, Bastila, and even Revan. So save Korriban for last, and visit all the other planets first. Nar Shadaa is an interesting place though.


Hope this helps.

Like cheating is good said there really is know best order but if i were you i would do Dantooine beacause the first planet is were you build your lightsaber and it has alot of good crystals in the cave. Narr Shaddaa second beacause on narr saddaa you will get mira if you are lightside and you can train her to be a jedi so you want to get her ASAP.
Next i would do onderon because you will need at least a decent level to fight through all the beasts and soldiers there (although it isn't too hard if you keep your party together) Then last you want to go to Korriban beacase you either need to be lightside or darkside i think 75%. And in the secret tomb you will fight malak, Kriea, Revan, And Bastila.
Hope i helped