Share common interests. Find something, anything, that you have in common as far as your interests go. Often, having a common interest is going to give you something to talk about, and a bond that is formed. So, as they are talking about themselves, find something you can share with them. It can be a love of travel, even if you have never been anywhere. It can be a tiny commonality. Just find something. You will be remembered better if they have something to tie you to. For example, they may be telling you about how they program computers, and you may be computer illiterate, but you can find a commonality. Ask how they go into that. Ask what they do for fun.

Ask what they like to eat. It may turn out that their favorite snack is snickers, and yours is too. You may spend your days teaching kids soccer, and they behind a computer, but you both LOVE snickers. Boom, common interest.

Common interests bridge gaps, so find them and you will find a friend.

Talk about them. People love to talk about themselves, and love when people talk about them. So, you will find that they enjoy you better and be more likely to be your friend if you talk about them. Instead of thinking of things you can say about yourself, ask them about them.

Relate to them. You do not always have to agree with what they say, but find ways to relate to what they are saying. You may think the opposite of the opinion they express, but you can say, "I can see how you would think that." The more you relate to each other, the more likely you are to be friends.

Be someone they would want to be friends with. If you are rude, cut them off, spit when you talk, have bad breath, annoying habits, etc. they may not want to be your friend. So, be sure that in addition to practicing things like talking about them, that you are someone that is going to be pleasant to be friends with. First impressions influence friendships, etc. so be properly groomed, etc. so that your first impression does not keep them from wanting to be your friend.