They look good man, alittle lanky, but healthy just the same... What do you need to know about? Red stems? Your stems look fine in the pics... To bloom simply change your light schedule to 12 hrs. of light and the other 12 hrs. dark... Make sure there is not a drop of light during your dark period... In roughly 8 to 10 weeks you should be ready to chop her down.... Thats basically it... What kind of lights are you using?