Connect your cable to the radio (turned off) and then connect the other end of cable into a USB port on PC. With PC on, turn on the Baofeng. Your radio is a BF-F8HP and is supported by CHIRP. You should go online to Radio Reference and look for frequencies in your location, whether the freqs are for GMRS, HAM or Police/Fire/rescue etc.....Make a list of all the ones you want. Take note if the frequency uses a TONE, or TONE SQUELCH or DCS (digital tone). It will tell you in RR. With radio connected and PC on turn radio on. Click on the CHIRP icon to star the program. You will get a welcome screen. Go to TOP left of window and click on the RADIO tab. In the drop down menu pick "Download from Radio". Then another little box pops up where you first choose PORT.....there should be something in that field showing available port. select that then go to next field and click "Vendor" and look for the "Baofeng" choice and shoose that. Lastly go one more step below to find the MODEL...look for BF-F8HP. If your version of CHIRP is current you will find the model in the list. Then "OK" it and if all went well you should see progress bar in green downloading whatever is on radio to the program. Now get your list of freqs you want to program. Go to the top left and click on "File" then "new"....a new empty screen will appear. Start filling in from left to right starting with "Frequency".....you can skip "name" field for now.....click on the "tone mode" field to choose either "tone" if the freq has a single ctcss tone. If the freq has tone squelch, which is a tone on both TX and RX choose "TSQL" and you also set the actual TSQL number in the "Tone Squelch" field.....if there is no tone used just skip this field....and if there is a digital tone, "DTCS" then pick that and enter the actual DTCS code the feq uses in the "DTCS" field..... dont worry about the "RX DTSC" "DTCS Polarity" and "Cross mode" fields.....I am not sure what they do and I never use them. Since you will only be MONITORING you dont have to set anything else in row except maybe for "Mode".....so check if freq is either FM NFM ect in drop down list. In Radio Refeence they show the modulation type. I am not sure if there is a TX prohibit feature in radio cause you dont want to accidently transmit.
I know this might sound confusing but thats the simplest way I can think of on programming that radio with CHIRP. Become familiar with the pages on radio reference. It would be helpful to know where you are located to find the right section on RR to get this information.