Regularly changing the blades is essential to avoid shaving problems. The blades need to be replaced after every 3-4 shaves, and should not be shared with anyone else.
Hot water opens the pores and softens hairs, which is a must for a hassle-free, close shave. A hot shower before shaving will guarantee you the best of it. When you're finished, rinse shaving foam residues with water that's cool but not cold.
Make sure you are not too hard on your skin with that razor. Skip or go lightly over spots that seem irritated. Razor bumps and acne need extra care until they improve.