You need a DAW (digital audio workstation) like FL Studio, Cubase and so on, find one you feel comfortable looking at since it makes it easier to stay at it, cuz if you dont like your workspace, you probably wont return.
Lets stay basic and make a standard 90 BPM(beats per minute(speed of the track)) Hip Hop beat.
In HipHop a 4/4 measure is kinda standard, not a must but its the easiest. You ll notice somewhere on the top of most DAWs there is the measure and BPM displayed. Most of the DAWs have standard settings like 130 BPM 4/4 measure. Keep the measure, set the BPM to 90 and start browsing thru the standard sounds of your DAW. Drop a kick, hi-hat and a snare sound into your beat-/pattern editor. I think by now all of the popular DAWs should have a metronome (often found on the top of your DAW UI, close to BPM and measure settings.
Enable the metronome anf hit play, you will hear rhythmic clicks. So, in the 4/4 measure you want to put the snare on every second click. Place them in your pattern editor so they match every second click of the metronome. Now you can try to experiment with the kicks and hats in between those snares. Try to get a rhythmic feel with your drums so its comfortable to listen to. You now have 1 Bar(1 Bar = 4 clicks of the metronone in 4/4 measure) of a drum loop
If you re done and satisfied place your patterns in the song editor, you can clone your first pattern and change little things up, like some extra hats, effects or maybe a extra kick right after the second snare.
After you put together your patterns you can can then hit Export and either export as a WAV file(uncompressed, big af in size, get some huge HDDs, if you re serious about music)
so you could use that loop in other projects or you fiddle around with it more and maybe add some extra sounds and export it as a MP3 (compressed, use only for finished stuff that doesnt need to be edited anymore).
Congratulations, you made you first beat/drumloop.
Now upload it to all platforms like SoundCloud, YouTube, hell even go beatstars and so on.
And diss everyone saying your beat sucks, they dunno shit, i mean you re like the next Dr.Dre, who tf these clowns anyways? Tzzz sheeesh....