Lighting and Depth of Field

So in the past few days i have looked a little into lighting as i really didnt understand it in the last project i kinda just copied my teams lights, whilst taking in little bits. My scene is gona be set at dusk or dawn still to decide.
Its kinda early to worry about lighting and DoF (depth of field) but if i leave it till week 7 or so i will probably do a botch job so every few days i am going to concintrate and read up about things i dont know much about that will be useful modelling in the industry.
As shown below in older posts if possible i would like my work to reflect the games industry now and try to pick up the techniques they use to achieve the quality in AAA games.