meditation can get your energy flowing. my very first circle was so simple, i don't think i lit candles for the watchtowers. i had some incense, and a cookie and some juice. i spoke to the lord and lady of my intent, then had a bit of the juice and cookie, and opened the circle. i don't even think i got my athame by that point.
charging energy can be done many ways. the one that feels right for you is the one you should do. some people dance, or sing, to gain energy. personally, it's meditation. you sound to be on the right track. just tell your family when you;re going to meditate, or if your family frowns on it, say you're studying and don't want to be disturbed.