I am pretty new to knitting and i am already incredibly frustrated. I am trying to do bar increases, which I know are probably one of the easiest knitting techniques possible but it is driving me absolutely bonkers.  For some reason when I go through the back, wrap the yarn and try to go back through my yarn is so tight on my needles that I can't even move them.  I am a pretty loose knitter so I don't think its my tension. I have watched two Youtube videos on it and I think I am doing the technique properly but some thing just can't be right. Please Help!!

I am a new knitter and I need some tips. I was trying out stockinette and finished a row when I set down my work. When I came back to it I couldn't remember if I needed to knit or purl the next row. Is there a way to keep track or tell the difference between the two ?