# Advanced

- [Notifications](/advanced/notifications.md): Find out how to decide which updates you would like to see to ensure you are notified of changes and news on Open Collective.
- [Preview Features](/advanced/preview-features.md): Our Preview Features option allows you to test new and improved features before they are fully released.
- [Activity Log](/advanced/activity-log.md): There are multiple ways to track and sort your activity across the Open Collective platform.
- [Security For Accounts](/advanced/security-for-accounts.md): We maintain the highest security standards to protect individuals and groups at Open Collectives. Learn more about security, and how you can help
- [Logging into your Account](/advanced/security-for-accounts/logging-into-your-account.md): Open Collective uses a password less system by default but you can choose to log in with a password if you prefer.
- [Two Factor Authentication](/advanced/security-for-accounts/two-factor-authentication.md): You can opt to add two-factor authentication as part of your login process at Open Collective, adding an extra layer of security to your account.
- [Keeping your Community Updated](/advanced/keeping-your-community-updated.md): You can keep your community updated on your Collective, Fiscal Host, or Organization by sending emails, update posts, and hosting events.
- [Updates and Contact](/advanced/keeping-your-community-updated/updates-and-contact.md): You can use Open Collective to send updates to your community directly on the platform and via email. Keep your contributors informed.
- [Conversations](/advanced/keeping-your-community-updated/conversations.md): This is a discussion forum for your community to converse, ask questions, say thank you, and get things done together.
- [Verification](/advanced/verification.md): The Verification Badge indicates that an individual or organization is legitimate and has passed verification checks. It’s a simple but important way to help others trust your identity.
- [Understanding the Ledger](/advanced/ledger.md): Open Collective is built around a ledger that records all of the financial activity on the platform. Read on to learn more about how our ledger works.
- [Individual Transactions](/advanced/ledger/individual-transactions.md): All transactions have specific properties assigned to them. Read on to learn about the various fields that describe all transactions on the platform.
- [Transaction Pairs, Groups & Perspectives](/advanced/ledger/transaction-pairs-groups-and-perspectives.md): For every transaction on Open Collective, multiple transactions are created to reflect the differences in every party's balance. Read on to learn more about how transactions are paired and grouped.
- [Viewing Transactions](/advanced/ledger/viewing-transactions.md): Transactions can be viewed in your account Dashboard. Read on to learn more about your Transaction page.
- [Exporting Transactions](/advanced/ledger/exporting-transactions.md): Open Collective features a robust export feature that allows you to create your own export templates that feature the categories that are important for your own accounting systems.
- [Fiscal Host Ledger Perspective](/advanced/ledger/fiscal-host-ledger-perspective.md): A Fiscal Host's ledger can be viewed from a few different perspectives. Read on for greater understanding of how Fiscal Hosts can view the ledger.
- [Contributions in the Ledger](/advanced/ledger/contributions-in-the-ledger.md): Learn more about how Contributions and Refunds are reflected in Open Collective's ledger.
- [Added Funds in the Ledger](/advanced/ledger/added-funds-in-the-ledger.md): Added Funds a represented slightly differently in the ledger than contributions. Read on to learn about how Open Collective reflects these transactions.
- [Expenses in the Ledger](/advanced/ledger/expenses-in-the-ledger.md): Learn more about how Expenses, including those that have been marked as unpaid, are reflected in the Open Collective ledger.
- [Ledger Changelog](/advanced/ledger/ledger-changelog.md): Over time, we've made some changes to how we structure the ledger. Read on to learn about the changes and your options for using our legacy options.
- [Exporting Your Data](/advanced/exporting-your-data.md): If you are an admin, you can export selected Collective data from the Open Collective platform for use elsewhere.
- [Deleting your Account](/advanced/deleting-your-account.md): If you no longer wish to use your Open Collective account, you can remove it using the following steps: