I am not sure if it was because I grew up in a household with
brothers or whether I would have had the same feelings and
inclinations had I been an only child but I do know that from the
time of my earliest memories I have been fascinated with penises.

Let's talk about the "basic penis." I regard oral sex as the
highest form of expression of love that can be exchanged between
two people. Hopefully this information will help you to break down
any barriers which you might have that would prevent you from
expressing your love in this way and from receiving a
reciprocation from your male companion.

First things first.  LOOK at the cock. I do not mean a
cursory glance not a hurried, surreptitious examination. Take
enough time that you convince your companion that some kind of
treat is in store for him provided he will allow you to do with
him, and particularly with his cock, exactly what you want.

Place him flat on his back on your bed, in a well lighted
room. Take his cock in your hand and LOOK at it. He probably will
not have the will power to stay soft, but then again you are
worshipping his very essence.  Few men can stay soft under these
circumstances, when it is apparent that the person LOOKING at his
cock is worshipping.

When you first start to touch him, his cock will become hard
and be in a state where your examination will be meaningful.
Wouldn't it be nice if going to the doctor for an examination was
as enriching?

The cock must be hard if you are to be able to note the
important parts-those parts sensitive to stimulation by your lips
and tongue.

The first thing you will note is whether or not he is
circumcised.  Circumcision is not universally practiced: there are
advantages and disadvantages to penises in both conditions from
the standpoint of providing oral caresses that bring the highest
kind of delight to your man.

Next take a close look at the shaft of the penis itself. 
There is a bulbous part of the organ near the outer end, slightly
larger in diameter than the shaft, which is often called the head.
Technically this is the glans penis (comes from the Latin glans
which means acorn.  Look at it closely; does kind of look like an
acorn doesn't it?)

The outside perimeter of the glans penis is the corona. This
joins the head to the shaft. This is the most sensitive spot on
the penis. It is toward this ridge that you will direct most of
your attention when you are giving head.  Follow this ridge around
to the underside of the penis. You know that I like to call it the
underbelly. I am particularly fond of the underbelly!

You will notice a point of juncture where the two ends of
this irregular circle come together. If your partner is not
circumcised, this will also be the point where the foreskin is
attached.  This tiny area is easily the most sensitive spot on his
entire body, and it is possible to bring your partner to climax
simply by gently tapping the tip of your tongue directly on it. 
Spend time caressing the glans and those areas immediately
surrounding it.

Beneath the glans is the shaft of the penis. The shaft does
not have many nerve endings and does not, therefore, provide a man
with any high degree of stimulation when caressed either manually
or with your tongue to the exclusion of the glans penis itself. 
It always amazes me to note the number of confirmed cocksuckers
who believe that sucking up and down on the shaft will get the guy
off. That's not it folks! If it works it is because the back of
your throat is playing tricks on his glans penis. Your throat is
giving head to his head!

Beneath the shaft are the testicles (balls, jewels, call
them what you like, but let's not ignore their significance). The
testicles are extremely sensitive to pain and are not usually
considered subject to erotic stimulation to any particular degree. 
Not true!  You can add a high degree of pleasure for him by paying
the right kind of attention to the balls!

Now lets go back to the shaft of the matter. The opening in
the tip of the glans penis is the meatus.  Here is where the cum
spurts. (I could have said semen is ejaculated but I did not want
to sound too professional).

There are other parts of a man's body which respond with
alacrity to oral stimulation.

Many men are particularly sensitive around the nipples. The
first time I kissed my partner's nipples he shot before I had the
chance to even get near his cock. While I have not been able to
duplicate this in the laboratory setting (he hates to go near the
lab with me) my partner still gets extremely turned on by my
lingual nipple caresses.

So LOOK at your partner's penis. Study it. Learn its areas
of special sensitivity completely and be ready to apply your
knowledge to his body with your tongue and with your lips when you
bend your loving head over his cock. There is nothing that you can
do which more clearly shows your love for him than the worship you
can provide his cock!