With gas prices so low, is it good time?

I am new to investing.

but i was wondering, with the prices of oil and gas so low, the stock prices of companies like devon dropped by a lot.

Should I invest in couple of these stocks? if so, which ones? how do i decide? just the big 3?

im also wondering if its even worth "risking" it. with my ignorant knowledge in field, i just calculated that since DVN is at ~~$20 per share. if it even goes back up to its average which seems to be around $60, i "only" gain 100% of my initial investment back. i know thats VERY VERY good return, but investing $1k to get $2k back just seems to long of a wait just for an extra $1k back