I'm new to this jailbreak thing. I have no idea what to get and what's cool. I saw auxo. That's pretty cool and I saw it costs 1.99 but how do u purchase it?
To buy apps in cydia you hit the buy button, register with a Facebook/gmail account to store your licenses, then pay with paypal or amazon.
Some tweaks I like and recommend: biteSMS, Lockinfo, Folder Enhancer, Zephyr/Activator, Iconoclasm, iFile and App Info.
I'm too lazy to wait for Cydia to load right now to check. What does App Info do?
AppInfo gives information on apps you have installed, such as dependancies, files, icon names, etc. It's a nice useful app to have.