so the only way to get xp and lvl-up is to increes your skills?

no xp for killing npc or completing quests?

yup
thts wat makes tes special

Yes. TES has always had a "learn-by-doing" system instead of XP system. One of the reason i like it. However if you play on PC there may be a mod for a XP-based leveling system sometime in the future, like there is for Oblivion.

Thanks for the clarification. i also quit like it that way...

but in this case, using training-points would result in lost of possible xp?