OBP refers to how frequently a batter reaches base per plate appearance. Times on base include hits, walks and hit-by-pitches, but do not include errors, times reached on a fielder's choice or a dropped third strike. (Separately, sacrifice bunts are removed from the equation entirely, because it is rarely a hitter's decision to sacrifice himself, but rather a manager's choice as part of an in-game strategy.)
Power development for batting performance can be improved drastically through proper strength and power training. It is not to be trained through these ridiculous imitations of sport specific movement such as adding resistance bands or tubing to your bat and taking swings against the resistance of these tubes. I’ve also seen implements being attached to cable systems while mimicking swing patterns as well.
The formula for determining On-Base Percentage (OBP) is to add the batter's number of hits, base on balls, and times hit by pitch together and divide this number by the sum of at-bats, base on balls, times hit by pitch and sacrifice flies. Most leadoff hitters in baseball typically have a high OBP as these batters have the ability to get on base consistently on their own and are slotted in the beginning of the order. It is possible for a player to have a higher batting average than OBP, but this is usually only if they do not draw many walks or get hit by many pitches or if they hit an inordinate number of sacrifice flies.
Henry Chadwick, an English statistician raised on cricket, was an influential figure in the early history of baseball. In the late 19th century he adapted the concept behind the cricket batting average to devise a similar statistic for baseball. Rather than simply copy cricket's formulation of runs scored divided by outs, he realized that hits divided by at bats would provide a better measure of individual batting ability. This is because while in cricket, scoring runs is almost entirely dependent on one's own batting skill, in baseball it is largely dependent on having other good hitters on one's team. Chadwick noted that hits are independent of teammates' skills, so used this as the basis for the baseball batting average. His reason for using at bats rather than outs is less obvious, but it leads to the intuitive idea of the batting average being a percentage reflecting how often a batter gets on base, whereas in contrary, hits divided by outs is not as simple to interpret in real terms.
There’s a very good chance that you’ve heard these phrases at some point, “that was effortless” or “kid’s got easy power”. If you’re unfamiliar with “effortless power” you might not understand what I mean. Simply put it means that a hitter will display great power  but visually it doesn’t look like they tried to swing hard. Perhaps the more scientific way to describe and “effortless swing” would be, efficient.
These are just a few examples of the many critical factors that come into play regarding your hitting power that go outside the scope of what I can control on the gym floor. Essentially, you can do everything I tell you to do in this article to improve hitting power, but if you don’t have the proper technique to execute and express that power then your first priority is to learn proper batting technique.
My intention here is not to criticize Leyland, nor is it to promote sabermetrics as a healthy lifestyle for all baseball fans. I’d just like to share the location of a very comfortable place that I’ve found in the world of statistics, that has a pretty good overall viewpoint and doesn’t make me dizzy when folks start speaking in saber. I’d also like to make this a place that even a casual baseball fan, one that is intimidated by "advanced metrics" can get to rather easily, without getting queazy. It’s really not a steep climb.

"It's all about having a quality at bat," said Garrido, who has won five national titles. "You can't just go up there and start swinging and expect to get hit after hit. You have to be able to separate the pitches you can hit and the pitches you can't hit. And when you find that pitch let the ball location help you decide where you want to hit it. If you can do that you are on your way."