He has no idea why he's not popular among women.
This is a pretty big problem that most of "single men" have.
You have to figure out the problem and start out by solving them.
Problems could be as simple as, not being humorous, being timid, avoiding
eye contacts, etc...

No women will just show up randomly and ask you out on a date.
Women, in most cases, are more timid than men.
There may be no guarantees that brave men will get the women,
but one thing for sure! Timid men will definately not get ANY women.

Unless you have the facial characteristics of celebrities or have talents, such as dancing, that is at pro status, if you are not good at building up conversations, you get a big "L" on your head.
Learn to build up conversations.

There are lots of ways in doing this.
One of the most recommended ways is to get a hold of your friend who
is popular among women. "Not the ones who swears in every other words"
Be around him/her and observe the way they talk.

Most important point in this is how they are bringing up the humor within themselves in order to carry on with their conversation.

&& Don't Ever Swear in front of women. Its a big No No!

Women will think guys who avoid eye contacts are not interested in them.
Make eye contacts. Look into women's eyes and read their facial expressions.
If you can't read their mind, you also can't win their heart.
Look into their eyes and read their mind within their expressions.

Stop staring at their boobs, they will be stunned and a bit freaked out.

First, You don't have to be the nicest man in Earth to get a women.
Just treat her like no other.

You may be ready and have your mind set. But what you might not notice is that
women can also read your minds by looking into your eyes.
If you are shooting out a beam that says "I'm a freak",
they will be a bit creeped out by you and do not want to be anywhere around you. Let's not be a little freak who beams out freakish eye contacts.

Let me be straight forward. Newbies are weak in making decisions.
You maybe brave and are good in making conversation,
but women can see your black-heart by looking into your eyes.

You might look like a wolf aiming for a lone sheep.

Empty your mind and treat her comfortably.
It will be much easier to get closer to her.

Be a Man! There are guys who just can't go any further
than being just as a friend.
The reason for this is because they tried to stand as
Neutral and not as a Man.

From time to time, you have to show women your manly sex appeals.

There are lots of ways to show that you are a real man.
But making decision in the right time and leading
in physical skinship may also be ones to consider.

Most important thing is the 'Timing'
Right timing first comes from experiences,
and secondly from grasping the person.
(But don't be a pervert, Learn to reach out when the other person want.)

Who doesn't like kind men?
But there's only one person that you should be kind to.

By being kind to others, you may leave a favorable impression,
but you may also lose that impression from the person you want to win over.

Dating is an 1:1 battle. It's hard getting into a relationship if you try to win over
multiple ppl's heart.

Don't ever be too serious about relationship.
meet up with the person lightly. if they back up, be patient and wait for them.
if they come out, go out just a little bit more.
If you follow them when they are backing up, you become a stalker.

Losen your shoulders and meet up with a person lightly.
There eventually are going to be moments when you really have to be serious.

Until then, save up your seriousness.

If you really care, study. What's love and what makes complications.
if you treat a woman jus like how you treat your guy friends,
you may fall into a hole that you might not be able to come back out.

If you want to get into a relationship, building experiences are your best options.
To be very honest, even if I tell you all these stuff, if you haven't experienced these stuff it's all for nothing.

If you can't learn to share eye contacts and realize something from her two eyes, you are done for.

It's somewhat like riding a bicycle. One you get a  hang of it, it's not too hard, but if you haven't had a chance to ride it, you have no idea how the whole thing works. Instead of reading the guide over and over, one experience in riding it may actually help more.