Many veteran players recommend starting with a Knight and rushing the Kureimoa (found in the Village of Smiles). Leveling Strength and focusing on greatswords makes early progression significantly more manageable.
Use the L1 (or equivalent) button to switch between two weapon loadouts instantly. A popular strategy is to have a heavy melee set for close combat and a wand or bow for ranged safety.
For specific item locations or boss strategies, the Salt and Sanctuary Wiki is the go-to repository.
Putting points into Willpower early increases your Stamina, which is critical for chain-attacking and maintaining enough energy to dodge after an offensive. Advanced Mechanics to Master