Are you sure you even need to make a roll? If a task is everyday, and the situation doesn't involve undue pressures, there's probably no need to bother.
Just about anyone can make notes in a book, drive a car down a street, or boil a kettle.
In other words - don't waste time making unnecessary Task checks.
The simplest of Tasks generate their Task Rating by adding two appropriate stat(s). Lifting a heavy object would involve Strength + Strength, for example, whereas jumping might need Agility + Strength.
If the character also possesses an appropriate Simple Skill, they can add that to their TR, too.
Simple Tasks are jobs that anyone can at least attempt - something that doesn't require specialised skills or knowledge.
The most common game situations, in which a character is under some pressure to succeed, are Standard Tasks.
Generate the Task Rating by adding an appropriate stat to an appropriate Skill.
Sometimes the task requires a specific skill - piloting a 747, for example - someone without Pilot skill is just not going to succeed. Sometimes it doesn't - jumping over a pit, for example. Anyone can try a task like this, although they'll do better if they have the right skill.
Of course, all tasks are not the same - some pits are wider than others - and the Ref should apply modifiers as appropriate to the situation. See Modifiers.
If there's more than one person co-operating on the Task, see Helping Each Other.