Take showers everyday to stay clean, when your taking a shower be sure to use mild soap and warm water.
Having clean skin is important to keep you from getting acne to do so wash: your face every day at least once.
Rinsing your hair can be important because you hair can smell bad too. Taking showers is usually when you'll rinse you hair.
Having clean clothes to wear is crucial to the point that if you don't have clean clothes you smell bad. If you don't have clean clothes everyone will try to avoid you because you smell bad and nobody want that.
Shaving is not as important but is still is. You don't have to shave if you don't but if you don't shave make sure to keep the unshaven part clean so it doesn't smell bad
Using deodorant is one of the most important aspects of hygiene. If you don't have deodorant get some it is recommended. It makes you armpits smell better, there are different types of deodorant but it is your choice which one you get but just get one