Board Thread:Questions and Answers/@comment-142.55.105.219-20150117113039/@comment-68.226.81.85-20150118003025

It's a good idea to buy Angel Cookie first anyway, because her Magnetic Aura will help tremedously.

After that, get Cheesecake Cookie. Her coin generating ability will be your friend for a good long while.

Once you've done that, it's a good idea to start working on Cookies with Power+ abilities (Cheerleader Cookie, Special Ops Cookie, Fairy Cookie, etc) so they can still help you during your run even if you're not using them.

After that, you can buy whatever Cookie you want to play as.