yellow spots and wrinkling

hey wats up folks shit i have 4 kush plants an im having trouble identifying my problem, 2 of the plants have a wierd look, the 1st one has a slight wrinklng of the leaves so does the 2nd an the 2nd has a small set of yellow spots, anyone kno wat i can do to fix this problem or have any nutrients or grow boosters an how long to have them under light an how much water should i use ,and how long does it take on average to get sum buds on them, im new to this growing shit so i need sum detail lol thanks:weed::wall:
 
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