The EU itself also provides useful pages with all the information one could be looking for. Please see here for the general overview of EU AI Act information : EU Artificial Intelligence Act | Up-to-date developments and analyses of the EU AI Act
And the AI Act Compliance Checker might be a nice first tool to explore when having questions on the compliance of your AI-system in use / in development / in deployment / etcetera : EU AI Act Compliance Checker | EU Artificial Intelligence Act