You need to sign in to access the functions. For screenshots you can access the tutorial here .
Functions you can access after sign in:
Shows all assets, your total and available balance.
All transactions, organized in month.
All payment schedules related to timed and reccurring payments.
Remove and add assets to your account.
Assign names to public keys.
On Stellar, different assets can be defined by third parties. An asset always includes the asset code and the asset issuer. You can read more about the concept of assets, anchors and trust here: stellar.org
On every transaction a small Stellar Network Fee of 0.0000100 XLM is deducted from the account. Due to the presigned transactions the network fees are payed by Smart Stellar and not by you.