Just to elaborate a bit on what Saxony said, the LP system has changed (it changed at the start of world 5), and now there is two ways of gaining LP. The first is discovery, which is only really relevant during the first few days of playing, it works on giving small amounts of LP when obtaining or "discovering" an item for the first time (note: you can't take the item from a container, you must firsthand discover it). The second is curiosities. Curiosities are items you "study" over a period of time by putting them in this 4x4 grid, after a certain amount of time (different per curiosity), the item will disappear and you will gain LP (note: studying works also when offline).
For more information:DiscoveryCuriosity
And I'd advise you check out Sevenless' guide for starting off
, it will help you out just so much.