integration is an important branch of calculus...only way to master it my friend is to master the concepts thoroughly..and then move on to solving problems...while solving problems keep in mind that simplification of problems will help u immensely..use known facts like (sinx +cosx)^2 =1+sin2x...when problems are given in tanx and cotx forms,bring them to sinx and cosx forms...i am sure that integration will seem easy to u after this..cheers..!!
never give up in life.keep trying till you succeed.don't forget to rate my answers if u find them to be correct as it will only boost my confidence....