I can't understand how labels work... e.g.. I'd like to have a category called "Art Ideas"...+ then put projects + tasks in the category ...how do I do that? How do I attach labels to projects?
Please clarify, when you say you have a category called "Art Ideas" are you referring to a Project? We have Projects, which then have Tasks within them and those tasks can have Labels on them.
If you right click on a task, then Edit, you will have an option beside the date box to attach a label to it, as well as manage your labels.
We unfortunately, do not have labels for Projects at this time. We will consider adding this in the future.
Please consider adding labels to projects with the feature that all tasks assigned to the project would inherit that project's label
Thank you for your feedback, we'll consider it for future updates and you're welcome to vote for this feature in our Votebox: https://todoist.com/Vote/show/6167/