I'm trying to create a dragonblood beginning sorcerer based on the rules in Manual of Exalted Power - Dragon-Blooded. The background information indicates that it should be possible for a Heptigram student to know some spells by graduation, but doesn't include rules for getting them with bonus points. I also haven't come across a dragonblood equivalent of the able-to-do-sorcery charms that other exalt types have. Are there creation rules elsewhere for making a dragonblood sorcerer? And if not, how should I handle this?
The Dragon-Blooded can do Sorcery by taking the "Terrestrial Circle Sorcery" Charm. It is on p134 of the Manual of Exalted Power - Dragon-Blooded. It is the same than the one for Solars, on p220 of the main book. Note that they cannot take higher Sorcery Charms than this one.
As for the spells, this is actually described in the main book Character Creation chapter, on p75:
This works the same for Dragon-Blooded characters.