yes, yes you do post a lot of questions lol. its fine, you're learning, and you're giving me an opportunity to do something other than clean the bathtub. [don't know why i refuse to do it]
1. What are some good ways to draw energy for spells.
there are many methods, again its whats best for you. chanting, singing, dancing, jumping, drumming, are some of the physical ways people charge energy. personally i meditate and draw the energy towards me visualizing/feeling it enter my body near my shoulders [i tend to visualize golden wings of energy, there was an anime i saw as a kid where this happened, so i use that visual in my mind. it works for me] there's also the similar tree meditation where you visualize roots that ground negative energy and branches from the top of your head drawing in positive. some people use the roots to draw energy since trees draw nutrients with their roots. again, up to you.
2. Can art (like a picture or symbol) give a spell more meaning?
yes. again, it comes down to you. like i mentioned above, the visual from an anime i watch helps me visualize energy entering my body. when i'm healing with energy i do the same thing [only from a different anime.] runes are a more magickal example. if you understand the rune, you can use it. runes can be made, carved, or visualized during spell-work to increase its energy. if you make up your own symbols, it would work the same way, as long as you feel the energy the picture/symbol possesses.
for those who can't produce an image in their mind visual representations work, as long as you have something to focus on and implant yourself into.