Thought I'd put up a series of shots detailing Cris' growth throughout the dragon crisis (from before she found out she was a dragonborn (I use an alternate start mod) as the newest member of the thieves guild to after she defeats Miraak.) These shots are all technically taken at the same time but indulge me for a minute. The entry image is a shot of Cris as she would be during the dragon crisis.

Here's her before the dragon crisis:

And her after defeating Miraak:

Basically before the dragon crisis Cris only knew how to use daggers, bows and light armour as well as being a thief (this coincides with her backstory whichis on my site) during the dragon crisis she learns how to use one handed swords and magic (illusion, alteration, destruction and restoration) and after she defeats Miraak she learned how to use heavy armour as part of her joining the companions. This is only a brief synopsis of what happens but her main two "guilds" are the companions and the thieves guild (and by extension the nightingales, by the time she takes on Alduin for the final time she'd be a nightingale and the leader of the thieves guild) although she did spend a brief stint as a member of the college of winterhold to learn how to use magic.