Whether you are having intercourse, manual stimulation like a handjob or fingering or use toys like dildo or vibrator a good lubricant can enhance the joys of lovemaking. Never be afraid to experiment in your lovelife. Often you can use the natural way of lubrication. Vaginal fluid is just that. It will lubricate the vagina so the man can penetrate her with his penis without hurting the woman. Often spit is used when fingering or giving a handjob. The use of spit can also enhance the feeling of pleasure during masturbation. if these don't work you can use a lubricant.

There are two different kinds of lubricants. On oil bases and on water bases. The oil based lubricants will last longer and mostly give a better lubrication then the water based lubricants. On the other hand they are more sloppy, just think oil and you will understand. And they can cause vaginal infections. So it is best to use water based lubricants for all kinds of penetration. For male masturbation u can still use oil based lubricants. This will stay on longer and enhance the pleasure he is having.

Whit penetration use water based lubricants. They will dry out faster but are better with the use of a condom. One other downfall with oil based lubricants is that the affect the rubber from a condom and will make it more prone to teares This is not what you want when using a condom. Just picture this: "You just had great sax and when you retract your penis you pull out a penis wrapped in a torn condom. Unless you like kids and are sure you and your girlfriend / boyfriend or husband / wife are really loyal in there sex life this is the last thing you want."
So use water based lubricants for penetration. When they dry out you can reactivate them by applying some water or spit. This will even excite him or her. Just try it.
The same goes when using sextoys. Try to use water based lubricants when penetrating your partner with a dildo or vibrator. Woman tend to net get as wet when they use a sextoy and the lubricant will make up for it. Make sure u use a lubricant when using a toy that is bigger then then what they are used to. The vagina is very flexible but a lubricant will make the all experience more fun and pleasing for the both of you.

When giving a man a blowjob with the use of a condom you can apply some lubricant on his penis before putting the condom over his erect penis. This will make up for the fact that he can feel the wetness on his penis. Men tend to like you to use allot of spit on there penis when you are giving oral sex. For your pleasure you can use a flavored condom. You won't belief the flavors that are available these days. The same principle can be used to lick a girl. The chances to get a STD are also present if a man licks a woman in and around the vagina. Like always Monogamy is the best way to protect yourself. However, many monogamous people have been infected with sexually transmitted diseases by partners who are sexually unfaithful, have used injection drugs, or were infected by previous sexual partners. So the message is to be monogamous and be tested. To get back to lubricants. a Man can use a cut open condom and apply lubricant underneath. This will have the sam effect as lubricant inside the condom for him.

For anal sex you better always use a lubricant to avoid a painfully experience and use a water based lubricant to avoid damage to the condom you are using. This is even more important because with anal sex the transmitting of STD's is more likely then any other way of sex. This is because anal sex makes more little cuts in the anus and blood will cause infection.

Where to buy your lubricants. This is a this day and age no problem any more. They are widely available in supermarkets, drugstores, pharmacy, sexshops, online and so on. The assortment is very large in different flavors and scented the way you like best.