First steps
IThere are some things you really need to do even before you start reading a chart.
I don't know how much you know about Astrology, and this would be the first thing to address. If you know very little, then even the posts of Sharla and Barleywine may not be very helpful. So your first step is to equip yourself with some sort of textbook, which wil give you the basics and a lot of examples. There are several listed in the resources section. Allied to this, you could do with some software. Traditional Morinus is free and it's very good for horary.
The second and more important thing you need to know is that horary involves distinct roles, the person who asks the question and the Astrologer who answers it by understanding the question asked and then casting and interpreting a chart.
Now there's absolutely no reason why both roles can't be played by the same person. However, in such cases it's very important that both roles are still carried out. It's very easy for you, playing both roles to miss an important step for the Astrologer. That step is understanding the question. If I was the Astrologer and you asked me this question I would be unsure what you meant. I can see several possible meanings and I'm not sure which you are using.
Do you mean a girlfriend or boyfriend... Something that will lead to romance? Do you mean a 'mate'.... Someone you can go to a club or football match with or play games with? Do you mean someone at work, or college you'd like to know better. Do you have a specific person in mind for any of those roles or are you asking because you have difficulty making friends and want to overcome that difficulty (in which case the question is about you, not the possible friend)?
Getting the question clear in the mind of the Astrologer is vital, otherwise you will not get the right answer. You might think that you know your own mind but it's very easy to slip up on this stage. The other day I asked a question about my wife's missing watch. It's a question that she had asked some time ago. I cast the chart and started reading it using the second house for personal valuables. It was only part the way through my search for the watch based on that chart, that I realised I'd referred to her by name in the question. She wasn't the person asking the question; that was me; and the second house was not her valuables. So I didn't understand my own question and had to start again.
Barley wine speculated that this might not be a suitable horary question and I can see why. There's no time frame and it could quite easily be a question about your basic personality and therefore more relevant to natal Astrology and our natal chart. It would be making the lines of 'Are you naturally predisposed to difficulties making friends?' If so then that is where you should look, your natal chart.
If you have no clear birth details and a natal chart is problematic, then horary might be a substitute, but not a perfect one. If your question is about making a friend in the next month or year then horary might well be the preferred way to go.
There's a lot to think about there but, in any horary question, getting the question clear is the hardest part. If you were consulting me for a readind we'd talk this over till I was satisfied I knew what you were asking. Reading for yourself means that you have to carry out that discussion with yourself. Only when you know exactly what you are asking and you have the right wording do you cast the chart.