massaging during third trimester

Hi. Did anyone ever try self perineum massage during last few weeks of the pregnancy?
If anyone has some experience ,pleas egive me some input.
1)is it really effective for a betterchance of less tears?
2)what oil/lotion/lubricants you have actually tried and what is your feedback?
3)how many times a day and how many minutes every time?
5)can anyone forward me any instruction video link to get an idea about how exactly it is done? I read the instructions online and the one given by lamaza class instructor.nut no diagrammatic representation.so I am confused and scared to give it a try . Because I already felt like when my doc was doing a simple pelvic exam (like pap test with his finger and then the pap test like steel tool), it felt so hard and hurting, I couldn't just relax.pap always hurts, but during this time I couldn't bear the discomfort of the test.I don't know if it is because avoiding intercourse and avoid taking anything closer or deeper inside during the entire pregnancy, I lost my tolerance level.
lastly does walking really helps in less painful delivery.is it too late to start walking from 33/34 weeks and is 12/15 mintutes enough?
Please help me with some info...
thanks

 

I was actually looking for some relevant information in regard to vaginal perineal massaging to ease out normal delivery:drowning.... thanks for your info though