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Here we go.
1. I read that one can add tasks by e-mail. How?
2. I read that one can synch my Todoist list with my iCalendar. How?
3. How can I make a task note and file upload?
4. How can I make a recurring task, recurring?
Thanks to any and all that can help! I appreciate it!
1. I've answered it here: https://todoist.com/Support/show/32025/
2. I will answer here: https://todoist.com/Support/show/32026/ in a moment.
3. To add a note to a task, hover over it and you'll see a note icon next to its name - click on it and you'll be able to add a note or a file through this window.
4. I've answered it here: https://todoist.com/Support/show/32027/