There are three ways to tune on a desired frequency:

  Using the buttons you will have various steps,  according the Mode (SSB, AM etc).
  NB: if you use AM below 1620 KHz, the step will be 9  KHz, otherwise it will be 5 KHz
 

You can select the bandwidth using the fixed values:
  
  or manually, using tabs wider, narrower etc.
  You can also click and drag the right or left part of the cursor  and select the bandwidth:
  
You can select between:
 
 
Tab Waterfall View:
  
  Various options regarding waterfall’s zoom
  Speed, Size and View will help you to adjust the way that waterfall  acts.
Press Save to Memory so to store a frequency. Frequencies  are stored as a cocky, so if you clean them from browser then the memories will  be deleted. To avoid deleting your memories, you can store them and download  them locally. Then you can upload them every time you wish to do so, or move  them to another WebSDR, which uses the same function.
  
We recommend to use a name or a callsign so to use the chat.  “Uknown” users cannot chat. Please respect the other users and the owner of the  WebSDR.
  Clicking on a user you will QSY to the frequency that the  user is tuned. You may need to correct it if you have been moved to a side band  frequency.

Audio Controls:
  
  Audio buffering will help  you if you face bandwidth problems.
  Audio out can be used if  you wish to use left, right or both audio channels. You can e.g. hear a WebSDR  in the left channel, and another WebSDR or your transceiver to the right  channel.
  Gain Control of the AGG can  be turned on (auto) or off (manual gain)
You can also record a QSO, download the file and reproduce it with your favorite audio player.
  
  When pressing “Analyzer” you will  be redirected to this page. Upload your record and then press “play”:
  
You can use Signal Strength Plot to check the signals:
  
  You can also use the Alternative Layout, pressing  
  
  You will then be redirected to the newer layout
  
Firefox blocks all media with sound from playing automatically, by default. If you want a website to automatically play media or make other changes to your autoplay settings, you can use one of the methods below.
 and select  Settings.
 and select  Settings.

  The default Block Audio setting will prevent autoplay for  all media with sound.
  The Block Audio and Video setting will prevent autoplay  for all media, including video, even though audio is muted.
  The Allow Audio and Video setting will allow all media to  autoplay. (please select THIS option)