Regenerations and Galleons
Regeneration
Some ingredients regenerate when you run out of them, others you have to buy after you find it and others you have to buy as they are not found. All ingredients can be brought. Objects and cards regenerate if you gift them to a Pottermore user, and although you get points for anything you find, you do not get another one for a regenerated object
Galleons
Galleons help you a lot, they are needed for potion equipment and ingredients, but if you do not spend them wisely you will not get any more. A few galleons are found in certain scenes but, unlike ingredients and items, they do not regenerate. At the beginning of the year you start with five hundred galleons and get more each year.