Here are a few simple steps.
Step 1 - Charge it overnight the first time.
Step 2 - Charging can commence when the battery level has
dropped to 30/40%. Do not charge above this level. Repeated
charging over 50% can cause your battery to lose half its capacity.
Always observe proper discharge and recharge cycles.
Step 3 - Going abroad for an extended period? Discharge your
battery to 40% and then remove it from the laptop. The battery
lasts the longest at this percentage. Contrary to popular belief,
you should not store it with 100% charge. This will cause premature
failure.
Step 4 - In day-to-day usage, the battery does not have to be
removed once you're done charging. Leave it in. The laptop
disconnects power to the battery automatically once its charge is
full. If you download a program like EVEREST, note how it mentions
"Power Source: AC Line" once the battery is fully charged.