Just look around, no one can expect to be there best on their first try.
One Stop SHopping

Start here then if you have anymore specific questions.. come back :)
Hard to answer a ? so vague.

Begin your quest for answers by reading "Am I Ready For Sex", by Brandye.

When it comes to making love, begin by knowing all about the gentle art of making out and do not rush past this most important aspect of the process. Please read Chapter Three in the link mentioned in the Index.

Later, when it comes to having intercourse after all else is said and done, I recommend using the Woman Superior position for the first time or two. The man reclines on his back face up while the woman straddles his body facing him. She can kneel, squat, resting on her hands or forearmes; or sit upon him. Here's why this position is so great.

1. it places the woman in complete control over the following:

a. knowing where the penis is and where the vagina is, she can easily guide one to the other relieving the guy of any angst or embarrassing fumbling
b. she can then position the tip of his penis where it will perhaps go in the easiest--assuming the presense of an intact hymen. If you have an intact hymen, consider placing the penis against the opening between it and the wall of the vagina
c. use pressure to press the penis inward. Never poke or jab or shove! That said, do not expect the process to be easy or go without a hitch. It can be easy, or, as is more often the case, not be because of being "tight" and possibly encountering the barrier of the hymen and having to breach it.
d. the position allows the woman to apply just the right amount of pressure at just the right angle
e. as the penis slips inside, she can govern the speed of insertion and the depth of insertion
f. once inside she can control the speed, tempo, and depth of stroking
g. along with the above, she has the ability to stimulate her clitoris while moving against his pubic area

Please understand the caveats of first time intercourse:
* if there is an intact hymen, and/or your vaginal opening is "tight", there may possibly be some discomfort encountered the first few times. How much depends upon how you are built and what your pain threshold is. A lot of times the hymen is NOT intact and the entrance is sufficiently pliable for the penis to slip in without much if any discomfort
* if you are able to enjoy orgasms regularly and consistently, do not expect one as a result of intercourse if you have experienced some discomfort. If you have, this is often just enough to squelch it. Regardless, I recommend enjoying one or more orgasms before attempting intercourse
* do not be surprised or disappointed if your guy goes soft while attempting penetration. The pressure against the base of the penis and the internal root structure can cause this to happen. If it does, fall back, relax a few moments and rebuild it, andm do not make a big deal about it.
* if all goes well and he begins to slip inside, do not be surprised or disappointed if he climaxes on the initial slide inward--or during the first couple of strokes. A lot of young guys up to their mid twenties suffer from a condition known as Premature Ejaculation that only manifests itself during intercourse and hardly if ever during masturbation while home alone
* be prepared for the fact that you may bleed. if you believe your hyman is intact then there will likely be some amount of blood loss when it is torn. Place a towel under you. It is better to stain it and wash it than the bedsheet

I hope this is of help. If you have specific questions, please post them.