First of all, BG3 is built on the DnD 5th Edition system, (with some slight changes) so a lot of people who have played DnD are going to be very aware of the system and how it works. But to be honest, on the easier settings, it’s almost impossible to fail the game, you can do what ever you want.
A big tip for BG3 inventory management is to use the “Send to camp” option for items. Grab them whenever, they don’t take up inventory space.