puzzles or theme bases/pattern based puzzles which one is good ?

I am a beginner in chess,i am researching about improving my skills in chess,i seen some articles in internet,i ended in a doubt.so i tought of asking here.

i went through some chess articles regarding improving chess board  vision/finding good moves.

so many articles suggested that doing puzzles will improve my skills.

so i am trying puzzles in websites/mobile apps.

i am just doing mate in 1 ,mate in 2 problems,also some problems regarding gaining advantage from a given position,

regarding mate in 1 problems i could do around with 80-90% accuracy,regarding mate in 2 problems i am getting a score of arround 60-70%.

my questions were

i)is my puzzle solving  percent ok for a beginner?

ii) i read an article here

http://chess.stackexchange.com/questions/1103/how-do-i-learn-to-understand-the-middlegame

it states that instead of just solving puzzles lookout for pattern/themes in a given position.

sounds good to me,but i wanted to know what you guys are doing when playing a game?

do you always calculate deeply for each and every move or just looking for patterns(like pin fork) / mates listed in that thread .

i am just curious....