lst is lowstress training, such as tieing down your plants to shape them, reduce height, or expose branches. Nutes are nutrients. Before you start playing with those pick up a pH tester and get the pH of your water under control, because if you don't have the right pH your plant won't be able to absorb the nutes. Also DON'T OVERWATER! Wait till your soil is just a tad bit damp an inch into the soil, just poke your finger in, then rewater. Once you figure that out work on the next improvment. Good luck.